Year One repo exhaust manifolds?

Posted By: monacoman

Year One repo exhaust manifolds? - 04/04/10 03:29 PM

Hi, I have installed a set of year one's repo 440 exhaust manifolds on my 68 charger. I also got the H-Pipe from them. My problem is that the H-Pipe needs spread out about 2 inches to fit the manifolds. Also if I were to spread them the H-Pipe will hit the torsion bar on the passenger side. Anyone ever used this setup? Or, had any problems like this? Thanks.

Posted By: Dougsmopars

Re: Year One repo exhaust manifolds? - 04/04/10 03:36 PM

I have the year one manifolds. I got my H pipe from someone else. But i had the exact same issue. I beleive the manifold port angle is incorrect. I used a porta power to spread open the pipes to bolt them to the flanges. As for hitting the torsion bar i heated up the pipe at the point of contact cherry red and used a rounded head pry bar to work the pipe. Finished result looks factory. Took some time ti get a nice curve but worth the effort. Guess i'm not the only one who has come across this.

Posted By: Dougsmopars

Re: Year One repo exhaust manifolds? - 04/04/10 03:38 PM

I guess it's also very possible that the H pipe i bought was made by the same supplier as Year One's and they were bent incorrect ?????

Posted By: CR8CRSHR

Re: Year One repo exhaust manifolds? - 04/04/10 04:07 PM

I have the same manifolds on my 66 Satellite 383. I am going with the TTI extensions to the exhaust using an H pipe as well. 2.5 inch. But the manifolds area correct repops for our rides that Year One sells...

Posted By: DAYCLONA

Re: Year One repo exhaust manifolds? - 04/04/10 04:31 PM

Quote:

I have the year one manifolds. I got my H pipe from someone else. But i had the exact same issue. I beleive the manifold port angle is incorrect. I used a porta power to spread open the pipes to bolt them to the flanges. As for hitting the torsion bar i heated up the pipe at the point of contact cherry red and used a rounded head pry bar to work the pipe. Finished result looks factory. Took some time ti get a nice curve but worth the effort. Guess i'm not the only one who has come across this.

I'd be more inclinded to blame the H pipe for improper fit,....on my Charger I used factory 70 440 HP manifolds, and the first H pipe I got from Accurate Exhaust was no where close to fitting with out major surgery, the 2nd H pipe from them needed the drivers side heated and stretched to fit, you might want to slide an inspection mirror down the pipes from the rear were the mufflers attach to see how the openings of the H crossover look, mine were about the size of a quarter, I ended up cutting the H crossover in the middle to seperate the pipes, so I could clear the H passage properly, then I welded 2 exhaust flanges to the H cut, so I could bolt up the pipes back to there position

Posted By: bboogieart

Re: Year One repo exhaust manifolds? - 04/04/10 05:41 PM

I ended up cutting the H crossover in the middle to seperate the pipes, so I could clear the H passage properly, then I welded 2 exhaust flanges to the H cut, so I could bolt up the pipes back to there position (quote)

I was thinking this seemed the best fix as well.except I would weld rather use flanges.

Posted By: Tom Swope

Re: Year One repo exhaust manifolds? - 04/05/10 01:44 PM

YO reproduction BB manifolds have in the past been
excellent in fit and appearance. We have personally used them and have countless customers using them with our exhaust systems with no fitment issues. There could be a few factors causing the problem. If the flanges are spread to aproximately 21-1/2" apart on the h-pipe and the h-pipe bolts to the manifolds but hits the left torsion bar-check the engine alignment. Measurements are 2.50" offset to the right and 5-1/2" in elevation from the top of the k frame with all measurements taken from the center of the crankshaft. If this is within specs then try a different brand of h-pipe. I disagree with Dayclona in the above post regarding his apparent problem with one of our h-pipes. He also made this same claim in an earlier post last year. Dayclona has his wires crossed. There is no proof that the h-pipe was from us and we have no record he has ever been a customer. If we manufactured our product as poorly as he has claimed we would not be in business today.

Posted By: Dougsmopars

Re: Year One repo exhaust manifolds? - 04/05/10 10:02 PM

The manifolds did fit very well and look beautiful. I'm very happy with them. I didn't get my H pipe from Accurate as shipping was to expensive i'm too far away. My H pipe had the same problem with hitting the torsion bar. I checked those measurments you mentioned and motor is sitting fine. Don't know who actually made my H pipe but it was no big deal to spread it open a bit and heat and notch at torsion bar. It just barely hit but would have been a nasty rattle if not fixed.