• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

Tranny rear exhaust mount problem ????????

Share this page

Tinkerman

Tinkerman

Darth Vader
Offline
Evening all. A short time ago I wrote complaining about the TR3 front exhaust mount. I was having a BIG problem getting from here to there. Several of you suggested that I purchase the TR4 exhaust mount since it is simpler. I looked at it the catalog and indeed it did look simpler. I tried to install it today. Anyhow, again I am faced with the same kind of cant get there from here. When you look at the picture there is at least 3/4" space between the clamp bolt ears and the bracket. Whats up? Am I doing it the wrong way? If I turn the clamp to remove the space the bolt ears would be at the wrong angle. Its almost as if the bolt hole ear on the bracket is on the wrong side.

Any thoughts would be GREATLY appreciated.

Thanks, tinkerman
 

Attachments

  • 15025.jpg
    15025.jpg
    104 KB · Views: 313
Dick-

I can possibly verify my setup tonight, but I think what you have is pretty close. Have you tried to loosen the hanger a little and give it a twist inboard to the exhaust? That may be all you need.

Randy
 
Yep, first thing I tried. It didn't stay in line with the bolt hole in the bracket. Course I may have the hanger backwards, I'll look at that.

Thanks,Tinkerman
 
FWIW, I had the same problem. Never bothered figuring out why, just went back to the original bracket.

One solution might be a longer bolt & a short length of pipe for a spacer.

Hate to say this, but ... are you sure thats a TR4 bracket and not a TR4A? Been a long time, but ISTR mine looked longer than your photo.
 
I think its a TR4 bracket - the 4a is indeed longer (the drop down part with the mounting hole).
 
I had to cut mine and reweld it a little longer till I got it to fit. I seem to remember it took me about 3 trys. I also welded the nut onto the close side (in your photo) and with a slight angle to the plate downwards (about 10 degrees off vertical), I can get a socket on a long extension bar under the overdrive extension and tighten it from the driver's side. I must have done it about 4 or 5 times over the past 18 years.
 
TR3driver said:
FWIW, I had the same problem. Never bothered figuring out why, just went back to the original bracket.

One solution might be a longer bolt & a short length of pipe for a spacer.

Hate to say this, but ... are you sure thats a TR4 bracket and not a TR4A? Been a long time, but ISTR mine looked longer than your photo.
Click to expand...

I bought it from Moss as a TR4 bracket and clamp. I like the idea of a short pipe nipple, I can do that and get it done. I am going to reverse the4 clamp, might make a difference.

Thanks all of you for your comments, Tinkerman
 
Dick-

Unfortunately I can only get a shot from the underside so this may not be helpful. But here is the setup on my TR4:
IMG_0312Small.jpg


I think your bracket is the same as mine, but I am able to get it next to the clamp. In fact, not positive but I think I sandwiched it between the clamp. The pipe joint on mine is a little downstream of yours and I use a separate Mikalor clamp to hold everything together (they are great by the way). That may not be standard, as I have a TR4a manifold with twin downpipe coming in ahead of the setup.

Randy
 
Hmm, I thought I knew this, but I'm starting to wonder. Are the inner frame members farther apart at that point on a TR4 than on a TR3?

Randy's photo seem to show the head pipe farther to the right than it would be possible to put it in my car; and it also looks like there is more space between the bolt for the motor mount and the bolts to the frame.
 
I just last summer finished putting that bracket on my 4A. There was no way in the world it was going to fit as designed using that other steel clamp which also looks new in your photo. I forget the exact machinations of trying to fit it all together, but it was clear from the angle of the exhaust pipes and the size of the clamp, along with the configuration of the "bracket" that creativity was required.

I made a small steel drop down piece about 2 inches long from strap iron and bolted that to the bracket, then bolted the bottom of the two inch strap iron to a standard muffler clamp. I did not use the steel clamp from Moss. The muffler clamp was versatile and easy to rotate to pick up the strap iron extension.

Your job may be easier, but, as stated, I abandoned the factory suggestion because something just wasn't going to go without a lot of brute force, bending or crushing.
 
Kentvillehound said:
Your job may be easier, but, as stated, I abandoned the factory suggestion because something just wasn't going to go without a lot of brute force, bending or crushing.
Click to expand...

Yep, I agree. So, first thing today, I'm going to hunt up the right size pipe nipple and install it. There is no way mine will ever look like Randy's picture so I shall adapt, improvise and overcome.

Tinkerman
 
Re: Tranny rear exhaust mount, Fixed !!!!!!!!!!!

Bought a chrome plated sleeve at the local hardware store this morning, $1.50. Slipped right into place, snugged it all up and its a done deal. Even looks, purdy!

Thanks for your help, Tinkerman
 

Attachments

  • 15070.jpg
    15070.jpg
    106 KB · Views: 186
Re: Tranny rear exhaust mount, Fixed !!!!!!!!!!!

Dick-

That does look good, and looking at that picture I understand how you could not get it hooked up as on the TR4. At some point if I can get relative measurements made on TR4 vs TR3 frames I'll try to figure out what is going on here and report back.

Randy
 
Re: Tranny rear exhaust mount, Fixed !!!!!!!!!!!

I think that would be good knowledge for the forum to see. From what I've read I'm not the only one involved in this type of modification so the more we know about it the better off we all are.

Tinkerman
 
Re: Tranny rear exhaust mount, Fixed !!!!!!!!!!!

Mine is like you have done Dick. But where you have the hex head for the bolt, I have that plate angled a bit towards the centerline of the TR. I also MIG welded a 5/16 UNF nut there just where you have the hex head. I then put the bolt in from the far side under the overdrive and tighten the bolt head from the driver's side with a 1/4" ratchet drive and an long extension and a socket.
 
Re: Tranny rear exhaust mount, Fixed !!!!!!!!!!!

Yep, I can see where that would allow you to get the angles alligned and eliminate the spacer. "IF" I ever have to do more work down there I will take that route.

Thanks for the tip, Tinkerman
 
Re: Tranny rear exhaust mount, Fixed !!!!!!!!!!!

I had a mental lapse earlier and didn't think to look at the same setup on my TR4 project car. Here are a couple more snapshots confirming that for the TR4, the bracket sandwiches between the exhaust clamp. Still not sure why there is a difference, but we can compare clamp dimensions if needed.
IMG_0317Small.jpg


IMG_0319Small.jpg


Randy
 
Re: Tranny rear exhaust mount, Fixed !!!!!!!!!!!

After seeing your pictures and studying the Moss catalog,I really belive Randy, that it's the exhaust pipe configuration that causes the problem. With the way the head pipe is bent to run through the center frame box it physically cannot fit. So a little modification or creative rigging has to be used. Your pics confirm, to me, that it has to be done that way.

Thanks, Tinkerman
 
Back
Top