Britbike forum

Classic British SparesKlempf British PartsBaxter CycleThe Bonneville ShopLowbrow CustomsGirling Classic MotorcycleLucas Classic MotorcycleHepolite PistonsIndustrial tec supplyJob Cycle

Upgrade your membership to Premium Membership or Gold Membership or even Benefactor


New Sponsor post
10% Off Girling at The Bonneville Shop 2/3-2/9/23
by The Bonneville Shop - 02/03/23 6:14 pm
New FAQ post
News & Announcements
Premium members! 🌟
by Morgan aka admin - 02/04/23 2:40 pm
Buy BritBike staff a coffee ☕️ or pint 🍺
by Morgan aka admin - 01/15/23 9:29 am
Benefactor ✅
by Morgan aka admin - 01/08/23 8:38 pm
How to guides - Technical articles
ShoutChat
Comment Guidelines: Do post respectful and insightful comments. Don't flame, hate, spam.
Member Spotlight
Denis J
Denis J
Sacramento, CA
Posts: 485
Joined: November 2012
Top Posters(30 Days)
Lannis 84
DavidP 83
Top Likes Received (30 Days)
Kev. 34
DavidP 27
Newest Members
Uneasy Rider, Mally, Daveed, 70Triumph, Knight57Corv
12,392 Registered Users
Forum Statistics
Forums35
Topics76,551
Posts784,409
Members12,392
Most Online204
Jul 10th, 2022
Random Gallery photo
Photo posting tutorial

Previous Thread
Next Thread
Print Thread
#893902 10/23/22 11:37 pm
Joined: Oct 2008
Posts: 8,155
Likes: 354
DavidP Offline OP
Britbike forum member
OP Offline
Britbike forum member
Joined: Oct 2008
Posts: 8,155
Likes: 354
I'm replacing the ugly old header on my '72 T150V. The Triple Tec header I bought looks beautiful, if only I could get it mounted.
The center pipe takes a bit of struggle to line up, and the pipe rubs on the frame down tube. In any case I can't get the pipes any closer than 1/4" away from the head.
I took a file to the adapters to clean them up, no use. I bought new adapters, though I was only able to replace two of them. The RH one will not turn and I don't wish to chance striping the threads. Still no joy, the thing simply will not go fully on the adapters. At least the old header used three separate head pipes.
Has anyone used this exhaust system? Are there any secrets to how to get the darn thing on?


"Gosh, it's not a 1/4 20, must be metric."

72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"

British motorcycles on eBay
Joined: Sep 2001
Posts: 1,491
Likes: 54
Britbike forum member
Offline
Britbike forum member
Joined: Sep 2001
Posts: 1,491
Likes: 54
I've found that most 'new' pipes have to be massaged. Use a towel type rag or rope wrapped around the pipe several times and pull and tug till the system bends enough to fit. Once you get it on and ride it, the heat generally 'sets' the system and it fits from then on.
Try to avoid rubber mallets etc
Sometimes with the system off the bike, you then use a slightly smaller piece of pipe inside the headers and use this to tweak the alignment.

Once you have the headers on and bolted up, you can then use the bike to bend the side exhausts to your preferred position. Again you may need to use the smaller length of pipe to help bend them. To avoid dents and kinks etc, position the smaller pipe in as far as it will go and exert some pressure, then reposition the smaller pipe out a but the exert pressure again, then position the smaller pipe out a bit again and repeat. This way you are bending along the length rather than in one place.
I bought a Viking big bore system and had to do all of the above to get it to fit. But now I can unbolt and re install with no such issues.

Joined: Sep 2021
Posts: 220
Likes: 35
Slow and old
Offline
Slow and old
Joined: Sep 2021
Posts: 220
Likes: 35
The awful - looking headers on my T150 are what I believe to be a stock set welded together. Still able to install/remove, but the oil cooler must first be removed.


"Love 'em all.... Let GOD sort 'em out!"
pijones has a Britbike again
Joined: Oct 2008
Posts: 8,155
Likes: 354
DavidP Offline OP
Britbike forum member
OP Offline
Britbike forum member
Joined: Oct 2008
Posts: 8,155
Likes: 354
I left the pipes in place overnight. Perhaps the metal relaxed a bit, I got the outer two as close as 1/8", but the center pipe is still about 1/4" away.
I don't know how I could hold the assembly firmly enough to tweek one pipe. My vice would likely mar the finish.
And here I thought that I gave up having to modify parts to fit when I sold my BSA. laughing


"Gosh, it's not a 1/4 20, must be metric."

72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"

1 member likes this: pidjones
Joined: Sep 2001
Posts: 1,491
Likes: 54
Britbike forum member
Offline
Britbike forum member
Joined: Sep 2001
Posts: 1,491
Likes: 54
trick is to get one in place and bolt it up. Then paly with the others one at a time.

pdjones, the Viking big bore kit is also a one piece, I also have to remove the oil cooler every time I want to remove it. But for a top end rebuild, I just let it hang there secured by a couple of occy straps.

Joined: Oct 2008
Posts: 8,155
Likes: 354
DavidP Offline OP
Britbike forum member
OP Offline
Britbike forum member
Joined: Oct 2008
Posts: 8,155
Likes: 354
At least I can do this system with the cooler in place. Just have to figure out how to route the cables to the instruments. I didn't notice at first, but the Triple Tec picture of their system mounted on a '71 has no tach cable on the engine. Worst case I'll need a T160 speedo cable and swap sides for the instruments.


"Gosh, it's not a 1/4 20, must be metric."

72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"

Joined: Sep 2021
Posts: 220
Likes: 35
Slow and old
Offline
Slow and old
Joined: Sep 2021
Posts: 220
Likes: 35
I can just take the tach cable loose from the drive and leave it to dangle.


"Love 'em all.... Let GOD sort 'em out!"
pijones has a Britbike again
Joined: Aug 2001
Posts: 300
Likes: 8
Britbike forum member
Offline
Britbike forum member
Joined: Aug 2001
Posts: 300
Likes: 8
Lowes has a nice selection of small clamps that the ends are plastic coated. I use them to fret a MAC 4 into one header on a cb750 that was driving me crazy. Check them out.

Joined: Sep 2021
Posts: 371
Likes: 36
Britbike forum member
Offline
Britbike forum member
Joined: Sep 2021
Posts: 371
Likes: 36
Haven't fitted the exhaust on the t150 project so can't help there yet, but I have a question. All my spigots are loose ( probably removed for the head work) my thought was never seize (copperslip)and tighten fairly tight with a large screwdriver thru the hole-no torque spec I can find but it's steel into aluminum- that sound about right?


Dave
65 TR6R 68A65T 69 B44VS. 74 T150V 65 A65 D L/R
19 Chieftain
Joined: Feb 2008
Posts: 6,338
Likes: 629
Britbike forum member
Offline
Britbike forum member
Joined: Feb 2008
Posts: 6,338
Likes: 629
You have the right idea.
Suggest first of all try the spigots dry into the head and feel for the fit.
If it is loose then I think oversize spigots are still available.
Once you are happy with the fit then proceed as you suggest.
I have never seen a torque spec for that but really tight is what I do (just short of BFT-- Bloody F*****g Tight)..
Back in the day if the fit was a bit sloppy then the dodge was to slightly distort the spigot by squeezing it in a vice but that was in the days when we had no money (so what has changed?-- Brit humor).
HTH

Joined: Apr 2014
Posts: 88
Likes: 14
Britbike forum member
Offline
Britbike forum member
Joined: Apr 2014
Posts: 88
Likes: 14
"my thought was never seize (copperslip)and tighten fairly tight with a large screwdriver thru the hole"

Not likely to get tight enough without the screwdriver bending.

Sorce a 3/4 drive socket that fits neatly over the spigot, drill a hole the same size as the one through the spigot at a suitable length along the socket.

The socket can then be secured with a high tensile bolt through the holes, you will then have another service tool in your box of things you'll only ever use once.

Joined: Jan 2004
Posts: 5,608
Likes: 224
Britbike forum member
Offline
Britbike forum member
Joined: Jan 2004
Posts: 5,608
Likes: 224
I went the other way using an internal deep well 7/8" socket
[Linked Image from live.staticflickr.com]
The cross pin is 5/16". The tool on the left is for my SpinRing exhausts which do not require hammering the pipes on and off.

Joined: Oct 2008
Posts: 8,155
Likes: 354
DavidP Offline OP
Britbike forum member
OP Offline
Britbike forum member
Joined: Oct 2008
Posts: 8,155
Likes: 354
I got the pipes on as far as I could. The outer two are fully in place, the center is still about 1/8" out. Of course, the holes in the adapter line up with the slots in the pipe, I'll need to check for leakage. Maybe if I run the engine for a while I can put on my welder's gloves and shove it further on?
Now I've found that the megaphone won't go on the collector far enough to fit the mounting bolt at the rear hanger. The only solution I see is to cut about 1/2" off the end of the collector.
For $1000 I expected better!


"Gosh, it's not a 1/4 20, must be metric."

72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"

Joined: Sep 2021
Posts: 371
Likes: 36
Britbike forum member
Offline
Britbike forum member
Joined: Sep 2021
Posts: 371
Likes: 36
That's a lot of cash! Sorry for the thread jack just seemed relevant. My 3 into 1 came off this bike supposedly, and the center stand was in the parts bin. About to give a go at installing it.

None of the pipes have an obvious position and I had hoped the relation to the collector would help but it very not-intuitive. Maybe you got couple switched


Dave
65 TR6R 68A65T 69 B44VS. 74 T150V 65 A65 D L/R
19 Chieftain
Joined: Oct 2008
Posts: 8,155
Likes: 354
DavidP Offline OP
Britbike forum member
OP Offline
Britbike forum member
Joined: Oct 2008
Posts: 8,155
Likes: 354
This system has the three pipes welded into the collector as one assembly, not possible to switch pipes.
I prefer the three separate head pipes of my old system, much easier to remove and install.
I suppose that I could have filled and finished the dents in the pipes and had the whole thing done with CeramiKote, or just wrapped the head pipes like so many bobbers, or just go back to stock if I thought I could find a manifold which was made well.
This exhaust came highly recommended by a few folks on the TR3OC Facebook page.
As it stands I'm about 1/2-3/4" away from getting the rear mount lined up with the exhaust hanger. That part on a '74 is different, maybe it goes back further to account for the cigar mufflers? But, without one for comparison I have no way of knowing.


"Gosh, it's not a 1/4 20, must be metric."

72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"

Joined: Aug 2001
Posts: 300
Likes: 8
Britbike forum member
Offline
Britbike forum member
Joined: Aug 2001
Posts: 300
Likes: 8
Have you brought the situation up with the maker???

Joined: Aug 2015
Posts: 1,988
Likes: 109
Britbike forum member
Offline
Britbike forum member
Joined: Aug 2015
Posts: 1,988
Likes: 109
I'd take it back to the vendor as being unsuitable. If they refused a refund I'd insert it so they walked like John Wayne


BSA B31 500 "Stargazer"
Greeves 200 "Blue Meanie"
Greeves 350
Greeves 360
GM500 sprint bike "Deofol"
Rickman Jawa 500 "Llareggub"
'35 & '36 OK Supreme
Kawasaki ZZR1400 "Kuro No Senshi"
Kawasaki Ninja H2 "Fujin"
Joined: Oct 2008
Posts: 8,155
Likes: 354
DavidP Offline OP
Britbike forum member
OP Offline
Britbike forum member
Joined: Oct 2008
Posts: 8,155
Likes: 354
Originally Posted by Andy Higham
I'd take it back to the vendor as being unsuitable. If they refused a refund I'd insert it so they walked like John Wayne
It cost $150 postage to get it here from California.
In any case, after a bit of careful work with a file inside the muffler I was able to get it on. I'll leave it bolted up overnight before I tighten the clamp. It will be fine after a few heat cycles.


"Gosh, it's not a 1/4 20, must be metric."

72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"

2 members like this: pidjones, tridentt150v
Joined: Oct 2008
Posts: 8,155
Likes: 354
DavidP Offline OP
Britbike forum member
OP Offline
Britbike forum member
Joined: Oct 2008
Posts: 8,155
Likes: 354
Now I guess I have to have the bike painted.

Newheader.jpg

"Gosh, it's not a 1/4 20, must be metric."

72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"

1 member likes this: pidjones
Joined: Aug 2001
Posts: 300
Likes: 8
Britbike forum member
Offline
Britbike forum member
Joined: Aug 2001
Posts: 300
Likes: 8
Looks good man even keeps the center stand. Paint what????

Joined: Oct 2008
Posts: 8,155
Likes: 354
DavidP Offline OP
Britbike forum member
OP Offline
Britbike forum member
Joined: Oct 2008
Posts: 8,155
Likes: 354
Originally Posted by PFribley
Looks good man even keeps the center stand. Paint what????
The tank is original 50-year old paint with many nicks. The side covers are supposed to be the same color. I have the correct decals for the covers, but I'm not putting them on black covers.


"Gosh, it's not a 1/4 20, must be metric."

72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"

Joined: Oct 2008
Posts: 8,155
Likes: 354
DavidP Offline OP
Britbike forum member
OP Offline
Britbike forum member
Joined: Oct 2008
Posts: 8,155
Likes: 354
I took it out for a spin today. It runs well and pulls strong. WOT shows no sign of 8-stroking, but it burbles a bit when I close the throttle. The old header liked 170 mains, I just ordered some 160.
It wails like a proper banshee, but now I know that the tach is lying to me. No way in hell that engine is spinning at 8500 rpm. laughing


"Gosh, it's not a 1/4 20, must be metric."

72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"


Moderated by  Tridentman 

Link Copied to Clipboard
British Cycle SupplyMorries PlaceKlempf British PartsBSA Unit SinglesPodtronicVintage MagazineBritBike SponsorBritish Tools & FastenersBritBike Sponsor






© 1996-2023 britbike.com
Powered by UBB.threads™ PHP Forum Software 7.7.5