Classic British SparesKlempf British PartsBaxter CycleBritBike Sponsor SteadfastCyclesSRM EngineeringLucas Classic MotorcycleHepolite PistonsIndustrial tec supply

Upgrade your membership to: Premium Membership | Gold Membership | Life Membership | Vendor Membership | Site Sponsor Membership
Welcome to BritBike Forum!
Britbike forum logo
Member Spotlight
Brad Jones
Brad Jones
Mayenne
Posts: 29
Joined: October 2017
ShoutChat
Comment Guidelines: Do post respectful and insightful comments. Don't flame, hate, spam.
Search eBay for motorcycle parts in following countries
Australia, Canada, France, Holland, Italy, United Kingdom, USA
Previous Thread
Next Thread
Print Thread
Page 2 of 3 1 2 3
GLJ #795968 01/18/20 11:27 pm
Joined: Sep 2013
Posts: 2,974
Likes: 80
Q
Britbike forum member
Offline
Britbike forum member
Q
Joined: Sep 2013
Posts: 2,974
Likes: 80
.
cant you just grab one of the pumps
Phillips screws with some vice grips and wiggle it out ?

Support Your #1 BritBike Forum!

Check out British motorcycles for sale: British Motorcycles on e-Bay UK, British motorcycles on e-Bay North America
Joined: Oct 2019
Posts: 34
G
GLJ Offline OP
Britbike forum member
OP Offline
Britbike forum member
G
Joined: Oct 2019
Posts: 34
Originally Posted by quinten
.
cant you just grab one of the pumps
Phillips screws with some vice grips and wiggle it out ?

I've grabbed the housing with channel locks and it won't budge.

GLJ #796012 01/19/20 4:55 pm
Joined: Oct 2008
Posts: 6,898
Likes: 92
Britbike forum member
Offline
Britbike forum member
Joined: Oct 2008
Posts: 6,898
Likes: 92
I just put the gear back on and gently levered behind the gear to get mine out. Remove only the two long screws.

Last edited by DavidP; 01/20/20 5:08 am. Reason: wrong info struck through

Knowledge speaks. Wisdom listens.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
GLJ #796036 01/19/20 10:08 pm
Joined: Jan 2004
Posts: 4,882
Likes: 63
D
Britbike forum member
Offline
Britbike forum member
D
Joined: Jan 2004
Posts: 4,882
Likes: 63
The wear on the forward side of the seal holder means the chain has been hitting it. Some chains are wider top to bottom. Look for a chain that has waisted (not oval) link plates.
The '72 R3 parts book for the five speed shows 19 tooth as standard.
If you do not want to buy the tool for removing the oil pump, take out the two screws that hold the pump together, replace the gear and use it to pull the end housing off. Then replace the two body screws and evenly turn them in to lift the base plate off the case. Someone may have used sealer on the gasket which is not recommended. First because it makes the pump hard to remove and second it is difficult to get the sealer off the bottom of the hole.
Using the tool you can pull the pump far enough to break the gasket then put the screws back in to pull the pump. The screws have to be carefully torqued.
Alternatively, if you have an inside bearing puller and slide hammer you can use the holes in the gear to pull on the pump.

GLJ #796044 01/20/20 12:04 am
Joined: Apr 2005
Posts: 2,036
Likes: 13
A
Britbike forum member
Offline
Britbike forum member
A
Joined: Apr 2005
Posts: 2,036
Likes: 13
Perhaps it's just me, but every Trident engine I had apart had mains or big ends wiped out, so I'd go for crank up rebuild if the bike was mine. And I'd clean this crank oil gallery really thoroughly, specially after such a long time of not using it.

When I bought my current Trident it had old Kibblewhite valves installed and they were in good shape, but stock guides were finished.
I left those valves in place and replace guides for Kibblewhite as well, they are made from much harder bronze than stock ones.
My machinist also opened exhaust ports a bit, according to factory bulletin making this engine breathing easier, but I don't know if X75 head was casting by AM as well.

Joined: Jun 2014
Posts: 233
Likes: 4
B
Britbike forum member
Offline
Britbike forum member
B
Joined: Jun 2014
Posts: 233
Likes: 4
Originally Posted by DavidP
Remove only the two long screws.

crazy I think you mean the 4 longer screws , The only 2 matching pair of screws are the 3BA x 2" that hold the pump body together ,
They're the 2 shorter & thinner screws .. "You need these left in place to hold the pump body together"

It's the 4 longer & larger diameter 2BA screws that hold the pump into the crankcase , 3 @ 2 1/2" length .. and 1 @ 2 3/4" length that's fitted through the dowel location on the back of the pump body .. It's these 4 longer screws you need to remove to get the pump out ,

Just make a note where the longest 2 3/4" comes out from (the Dowel position) it needs to go back in the same place when refitting ,

GLJ #796481 01/24/20 4:56 pm
Joined: Oct 2019
Posts: 34
G
GLJ Offline OP
Britbike forum member
OP Offline
Britbike forum member
G
Joined: Oct 2019
Posts: 34
Thanks for the replys.
I've got some 2BA all-thread coming from the UK to use to push the pump out.
Going to roll the dice on the bottom end. I did ride it 30 or so years ago. I don't remember any noise coming out of the bottom end. Will check oil pressure when I get to that point.

Another question.
Replacing the counter shaft sprocket. The Manual I have says to use "Hydoseal" on the splines. What was on there looked like some kind of varnish. Did a search on "Hydroseal" and cam up with nothing. What is normally used in it's place?

GLJ #796552 01/25/20 3:33 pm
Joined: Jan 2004
Posts: 4,882
Likes: 63
D
Britbike forum member
Offline
Britbike forum member
D
Joined: Jan 2004
Posts: 4,882
Likes: 63
Possibly Hylomar? A non-hardening sealer developed by Rolls Royce (?). Some people stuff the splines with silicone but that makes the sprocket hard to remove. You just need a touch where the sprocket meets the high gear shoulder.

GLJ #796575 01/25/20 7:05 pm
Joined: Feb 2008
Posts: 5,394
Likes: 127
Britbike forum member
Offline
Britbike forum member
Joined: Feb 2008
Posts: 5,394
Likes: 127
Yes--developed by Rolls Royce for use with piston engines. Good stuff.

GLJ #797901 02/08/20 10:22 pm
Joined: Oct 2019
Posts: 34
G
GLJ Offline OP
Britbike forum member
OP Offline
Britbike forum member
G
Joined: Oct 2019
Posts: 34
Made a little more progress. Most parts arrived on time. Minor set back on the cylinders.
Binnacles arrived from the UK in 4 days, amazing. Here's the old ones with there gauges. And yes the glass is broke on the speedo.
[img]http://www.xs650.com/attachments/upload_2020-2-5_15-19-25-png.159378/[/img]
New ones mounted with new hardware. They looked great.
[img]http://www.xs650.com/attachments/upload_2020-2-5_15-32-32-png.159379/[/img]
[img]http://www.xs650.com/attachments/upload_2020-2-5_15-44-13-png.159381/[/img]
Something needed done to the tach and speedo. I got lucky. Found a rebuilt set at a speedo rebuild shop that the owner said he personally removed from a Hurricane. No way to know if that's true or not but they look the same. One very small difference which may have been a production run difference by Smith. They look good.
[img]http://www.xs650.com/attachments/upload_2020-2-5_15-46-14-png.159382/[/img]
On to other stuff. Needed to get the oil pump out. Ordered some 3BA all thread from the Obsolete All Thread Company in the UK. A tap from the US version of Obsolete Tap Company. This stuff plus some parts I made and a special pusher tool was born. It worked.
[img]http://www.xs650.com/attachments/upload_2020-2-5_15-58-27-png.159387/[/img]
Took pump apart and cleaned and inspected. All looked good. Both sets of gears looked fine.
Cleaned up the right side engine covers. Not going to say they are polished. They do look 1000% better and put them back on with new stainless hardware. Also new stainless engine case bolts and custom made stainless washers. New stainless bolts and washers on left engine cases also.
[img]http://www.xs650.com/attachments/upload_2020-2-5_16-7-4-png.159388/[/img]
Now the little engine setback. New valves and guides arrived. Dropped them off at the machine shop late Friday afternoon. Asked Cory when he thought the cylinder would be done. He said he was going to do it Saturday morning after he got done rebuilding a snowmobile crank. Told him no problem. If he gets it done great, if not Monday would be fine. Superbowl weekend and all, I had other plans. Anyway no call Saturday morning, no worries. I figured the crank didn't go well or something more important came up. He called Monday morning with bad news. Something went wrong when he bored one of the holes. It came out .002 over the target size he wanted. Which meant after honing it would be too big. Going to have to get a new liner. He was not sure what went wrong. I'll give him the benefit of the doubt. He does good work, he prides himself on things being done right. He's been doing this stuff for 30+ years. To make it right by me it was going to need a new liner bored to my piston. He told me he could not find a new liner anywhere. So a company he deals with is going to make him a custom one. He has to remove it, measure it up and send them the specs. I checked and found one company that lists them, problem is they are out of stock. Not sure how long this is going to take. All this is going to cost me is time. His boo-boo, his nickel. Don't think I'm going to get my " friends and family discount" on this tho.
Not the end of the world. Since I have some extra time I've been doing some cleaning.

GLJ #801133 03/13/20 11:08 pm
Joined: Oct 2019
Posts: 34
G
GLJ Offline OP
Britbike forum member
OP Offline
Britbike forum member
G
Joined: Oct 2019
Posts: 34
Since there was a delay in getting parts back from machine shop I decided to spend some time on other bikes in the herd. Also had to go out of town for a couple of weeks on business.
Picked up cylinder and head from machine shop today. Should get cylinder painted this weekend and then next week get cylinder on engine and then engine back in frame.
[img]http://www.xs650.com/attachments/upload_2020-3-13_14-41-52-png.161782/[/img]

GLJ #801183 03/14/20 6:51 am
Joined: Jan 2019
Posts: 26
Britbike forum member
Offline
Britbike forum member
Joined: Jan 2019
Posts: 26
Hi

It looks like you have had the head and the cylinder blasted with some fairly aggressive media? Maybe it's an acid wash and this is unnecessary verbiage;0) Whatever, I always run a tap or a die over or through every thread then wash the blasted parts in really hot water. I find it loosens the really fine grit that seems to get trapped in the surface of the parts. There always seems to be enough grit in the bottom of the bowl when the parts laundry finished ;0)

Best regards

Esme


[Linked Image from i.imgur.com]

The older I get, the faster I was
GLJ #805477 04/15/20 7:25 pm
Joined: Oct 2019
Posts: 34
G
GLJ Offline OP
Britbike forum member
OP Offline
Britbike forum member
G
Joined: Oct 2019
Posts: 34
Been awhile since I posted anything here. Not a lot to post now but I have made some progress.
Engine is ready to go back in. Setting the cylinder on a XS650 is a piece of cake compared to to this beast. I thought how hard could this be. I found out. I was not able to do it by myself. Friend of mine came over Tuesday and gave me a hand. None the less next week back in the frame it goes.
[img]http://www.xs650.com/attachments/upload_2020-4-15_14-11-56-png.164419/[/img]
[img]http://www.xs650.com/attachments/upload_2020-4-15_14-13-15-png.164420/[/img]

GLJ #805559 04/16/20 1:37 pm
Joined: Dec 2014
Posts: 331
Likes: 26
D
Britbike forum member
Offline
Britbike forum member
D
Joined: Dec 2014
Posts: 331
Likes: 26
So now you understand how much more difficult it would be to install the cylinder block on the crankcase with the engine in the frame. I have a set of ring compressors which are designed specifically for these engines. I am not sure how it would be done without them, but I would like to watch someone try!

1 member likes this: GLJ
Joined: Oct 2019
Posts: 34
G
GLJ Offline OP
Britbike forum member
OP Offline
Britbike forum member
G
Joined: Oct 2019
Posts: 34
.
Originally Posted by dick page
So now you understand how much more difficult it would be to install the cylinder block on the crankcase with the engine in the frame. I have a set of ring compressors which are designed specifically for these engines. I am not sure how it would be done without them, but I would like to watch someone try!
If I ever have to do it again I'll let you know. I had bought a set of compressors that were supposed to be for triples. They didn't work.

Originally Posted by dick page
I am curious. Why did you paint the cylinder black?
X-75s came from the factory with the cylinder painted black

GLJ #805704 04/17/20 7:04 pm
Joined: Aug 2015
Posts: 1,721
Likes: 28
A
Britbike forum member
Offline
Britbike forum member
A
Joined: Aug 2015
Posts: 1,721
Likes: 28
If you want the X75 to be a user rather than a show pony, consider storing the exhaust system somewhere save and fit a 3-1 system.
The standard down pipes dig into the road at very modest lean angles and lift the back wheel causing a "brown alert"


BSA B31 500 "Stargazer"
Greeves 200 "Blue Meanie"
Greeves 350
Greeves 360
Suzuki GSX1100 EFE "Sorcerers Apprentice"
GM500 sprint/LSR bike "Deofol"
Jawa 500 "Llareggub"
Aprilia RSV Mille "Lo Stregone"
'35 & '36 OK Supreme
Kawasaki ZZR1400 "Kuro no senshi"
1 member likes this: GLJ
Joined: Oct 2019
Posts: 34
G
GLJ Offline OP
Britbike forum member
OP Offline
Britbike forum member
G
Joined: Oct 2019
Posts: 34
Originally Posted by dick page
Did you paint the carbs? I have been told they came from the factory painted.
No mine were never painted. From all the different pics I've seen of other ones I never noticed any others painted.

Joined: Oct 2019
Posts: 34
G
GLJ Offline OP
Britbike forum member
OP Offline
Britbike forum member
G
Joined: Oct 2019
Posts: 34
Originally Posted by Andy Higham
If you want the X75 to be a user rather than a show pony, consider storing the exhaust system somewhere save and fit a 3-1 system.
The standard down pipes dig into the road at very modest lean angles and lift the back wheel causing a "brown alert"
Yes I have one pipe scraped up a bit. I plan on replacing the exhaust with new but the same. My days of stuffing a bike in a corner that hard are long over. I used to race off road, was always more comfortable toe sliding than knee dragging.
The bike will get ridden but not a lot.

GLJ #805727 04/17/20 10:00 pm
Joined: Aug 2015
Posts: 1,721
Likes: 28
A
Britbike forum member
Offline
Britbike forum member
A
Joined: Aug 2015
Posts: 1,721
Likes: 28
IIRC it's the left pipe where it comes to the right and then bends up that hits.
By the way although the tank says Triumph it is really a BSA. The frame and engine are rocket 3, the head is a unique one off with extended finning

Last edited by Andy Higham; 04/18/20 2:30 pm.

BSA B31 500 "Stargazer"
Greeves 200 "Blue Meanie"
Greeves 350
Greeves 360
Suzuki GSX1100 EFE "Sorcerers Apprentice"
GM500 sprint/LSR bike "Deofol"
Jawa 500 "Llareggub"
Aprilia RSV Mille "Lo Stregone"
'35 & '36 OK Supreme
Kawasaki ZZR1400 "Kuro no senshi"
Joined: Oct 2008
Posts: 6,898
Likes: 92
Britbike forum member
Offline
Britbike forum member
Joined: Oct 2008
Posts: 6,898
Likes: 92
Originally Posted by Andy Higham
By the way although the tank says Triumph it is really a BSA.
Yeah, I remember early ads in Cycle World had the BSA logo on the tank. Seems they were hyping this bike even as the company was in receivership.


Knowledge speaks. Wisdom listens.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
Joined: Oct 2019
Posts: 34
G
GLJ Offline OP
Britbike forum member
OP Offline
Britbike forum member
G
Joined: Oct 2019
Posts: 34
Originally Posted by Andy Higham
By the way although the tank says Triumph it is really a BSA. The frame and engine are rocket 3, the head is a unique one off with extended finnomg

That is correct. The engine case where the vin # is stamped says BSA. The frame is a dual down tube in the front.
If you've never read this it is interesting.
http://craigvetter.com/pages/Motorcycle_Designs/Hurricane_Pages/Hurricane%20history%20intro.html

GLJ #806706 04/25/20 7:53 pm
Joined: Oct 2019
Posts: 34
G
GLJ Offline OP
Britbike forum member
OP Offline
Britbike forum member
G
Joined: Oct 2019
Posts: 34
Well the motor is back in the frame. Next up is the head. I know bolting the head on is not a big deal. I do have a question tho. The gasket set I bought came with a copper and a composite gasket. Which is better? The original was a steel gasket. Both the copper and composite gaskets are thicker. That doesn't bother me. Loosing a little compression is not the end of the world as all I want out of the motor is for it to run well. Not worried about the last bit of horsepower. With today's gas a little less compression is not all bad.
What do you guys think?
[img]http://www.xs650.com/attachments/upload_2020-4-25_12-55-51-png.165231/[/img]
[img]http://www.xs650.com/attachments/upload_2020-4-25_12-57-34-png.165232/[/img]

Last edited by GLJ; 04/25/20 7:58 pm.
GLJ #806766 04/26/20 1:58 pm
Joined: Dec 2014
Posts: 331
Likes: 26
D
Britbike forum member
Offline
Britbike forum member
D
Joined: Dec 2014
Posts: 331
Likes: 26
About the lifting fixture. Years ago, I made a lifting fixture to remove the engine from my Rocket 3. There was a drawing of one in the Manual I was using. I made it like the drawing. It attached using the head bolts. I lifted the engine out and bent one of the head bolts. Still have that thing somewhere.

GLJ #832863 12/10/20 8:16 pm
Joined: Oct 2019
Posts: 34
G
GLJ Offline OP
Britbike forum member
OP Offline
Britbike forum member
G
Joined: Oct 2019
Posts: 34
Like a bad penny I'm back.
Took some time off from the X-75 to tend to the rest of the herd, also to do some riding. I did order new exhaust, carbs and ignition for it.
Test fitting the exhaust.
[img]http://www.xs650.com/attachments/upload_2020-11-24_15-46-41-png.179413/[/img]
[img]http://www.xs650.com/attachments/upload_2020-11-24_15-48-8-png.179414/[/img]
[img]http://www.xs650.com/attachments/upload_2020-11-24_15-49-49-png.179415/[/img]
Original exhaust not in very good shape.
[img]http://www.xs650.com/attachments/upload_2020-11-24_16-2-47-png.179417/[/img]

Also was trying to install the new Premiers. Having trouble getting the bottom washer, spring and retaining collar installed.
Any words of wisdom? Dumb question, is that stuff necessary? The main spring will hold the needle clip in place which will keep the throttle rod in place.
I'm sure with enough time, patience and beer I might get it. Would rather learn from someone with experience.
[img]http://www.xs650.com/attachments/upload_2020-11-25_14-39-42-png.179488/[/img]
Thanks in advance for any help given.

GLJ #832884 12/10/20 11:05 pm
Joined: Sep 2020
Posts: 47
Likes: 1
M
Britbike forum member
Offline
Britbike forum member
M
Joined: Sep 2020
Posts: 47
Likes: 1
I believe you can eliminate that stuff by using the T-160 slide springs. That's what I've bought but haven't installed yet. I believe this mod also lets you eliminate the gantry spring which makes for a lighter throttle.

Page 2 of 3 1 2 3

Moderated by  Tridentman 

Link Copied to Clipboard
Job CycleBritish Cycle SupplyMorries PlaceKlempf British PartsPodtronicVintage MagazineBSA Unit SinglesBritBike SponsorBritish Tools & FastenersBritBike SponsorBritBike Sponsor






© 1996-2021 britbike.com
Powered by UBB.threads™ PHP Forum Software 7.7.5