Curing the TGP cross-over bellows issue...

Started by TGPilot, October 10, 2003, 08:01:10 PM

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TGPilot

Hey Guys...

Just wanted to show you guys a TGP Cross-over I just finished for a friend. My Ex-roomate (I am now married and have my own place) did all the welding for me. We fitted it on the car and tack welded it in place...then he Tig welded the rest off the car. Sorry the pics are not closer to see how good the welds look...but it turned out really sweet. $40 a piece for the flex joints...quality parts used by a few...and about 2.5 man-hours to fit. Speaking of fit...the flanges matched up perfectly as they should with ZERO stress... 8)

Enjoy...Kenny


R Dubya

Damn looks good from here.. as long as it fits and it doesn't leak that's all that matters.  Those bellows looks similar to the ones I have from Jeff M.  Did you build that for yourself or someone else?
Ryan Warren
'89 TGP
It doesn't run anymore.

TGPilot

I am sure the bellows look similar to the ones on your cross-over :wink:

I made this cross-over for TWalt on a project car he has had me working on for the last few weeks... 8)

Formula305

Is this a one time fabrication or do you plan on making more to sell at competive prices? :lol:
Formula305
'90 Turbo Grand Prix
'92 Firebird Formula
'00 Firebird Trans Am
http://drive.to/streetdreamz

Chris A

One thing I want to gently point out Formula, is while many crossovers can be fixed with a bellows replacment, there are a few that have much more serious failures.  

I think TGPilot used this to show that you can do it yourself if this is your only problem with it AND you can do it RIGHT!  Many guys weld in fixed pieces of aluminized pipe which can really destroy the pipe under heat. It will bend and crack the pipe in many other places and render it unusable and un-rebuidable.

TGPilot

Quote from: Formula305Is this a one time fabrication or do you plan on making more to sell at competive prices? :lol:

My ex-roomate is thinking about making a jig to do more of the TGP cross-overs...but it is up to him. He is an EXPERT welder and fabricator  and with that said he saw how easy it was for him to do this. He, like many others, will do something if profit is abundant and labor issues are at a minimum. Now like Chris said, there is a chance of bad flanges or bad piping before or after the bellows...but if they are in descent shape and it is just the bellows that need to be replaced, he may do some. It is not up to me as I would be making $0 from it... 8)

Formula305

Quote from: Chris AOne thing I want to gently point out Formula, is while many crossovers can be fixed with a bellows replacment, there are a few that have much more serious failures.

I understand that and at this point my original crossover with 85000 miles on it is in perfect condition. I was just curious mostly.
Formula305
'90 Turbo Grand Prix
'92 Firebird Formula
'00 Firebird Trans Am
http://drive.to/streetdreamz

Mike J.

I understand that and at this point my original crossover with 85000 miles on it is in perfect condition. I was just curious mostly.[/quote]

Perhaps you think your crossover is in perfect condition because you are looking at the outside heatshield which completely covers the real bellows inside.  The stock crossovers crack in as little as 10-15k miles and virtually always are cracked long before the 50k mile mark. TMU.
Twin black 90's

mfewtrail

Um, just to sorta add to this and ask this at the same time, wouldn't you be able to hear an exhaust leak if your crossover is cracked?
'93 SE, '90 Black/tan TGP, & '90 Red/tan TGP

Formula305

I would you think you would be able to hear the leak. And at anyrate I don't have any symptoms of a leaking crossover. The car runs flawlessly with the exception of it dying when I come to a stop, and that only happens maybe once out of every 20 times I drive the car.
Formula305
'90 Turbo Grand Prix
'92 Firebird Formula
'00 Firebird Trans Am
http://drive.to/streetdreamz

Chris A

You won't hear the leak unless its a really bad crossover, but it can be cracked enough to cause problems and not be audible. Mostly becuase of the heatsheild and insulation.

I would bet that your crossover is cracked at least slightly Formula. My car didn't exhibit any symptoms of a cracked crossover at all and it was cracked. If you are stalling every so often (it doesn't have to be all the time) very well could be... ;)  Anyway, not that it matters. As long as it runs well!

Chris

Formula305

I suppose it is most likely that it is cracked. But until it causes me problems I think I will leave it alone :shock: Besides I can't afford a new xover since I have to spend 650 on a new prior PMIII. :evil:
Formula305
'90 Turbo Grand Prix
'92 Firebird Formula
'00 Firebird Trans Am
http://drive.to/streetdreamz

1trucavalier

hi-flow intake, straight pipe, dsm bov, 24lb inj,  polished upper intake, turbo, and frt valve cover.

1trucavalier

hi-flow intake, straight pipe, dsm bov, 24lb inj,  polished upper intake, turbo, and frt valve cover.