installing new injectors.

[1dollardog]

My 42.5's will be here sometime next week. What exactly is involved in swapping out the old ones? Where do I start?
Thanks, Steve

 

[summit]

Get a turbo O-ring kit for the outlet adapter (Fel-Pro makes one). Also consider getting ahold of a new turbo drain gasket as well. Other than that you shouldn't need anything special. Do the heat shield mod to make reassembly easier.

http://www.turbobuick.com/forums/hot-air-non-intercooled-tech/271281-oil-drain-heat-shield-mod.html


http://www.turbobuick.com/forums/hot-air-non-intercooled-tech/270986-generic-oil-drain-grommet.html

Sorry, I can't do a step by step install. The hot air cars are a pain to swap injectors. Not the 30 minute deal like an intercooled car. You will be removing the turbo so if you don't feel comfortable doing it find some help. I doubt if a service manual would help any.

 

[fyrlt67]

I didn't pull my turbo to install new injectors, it was last year but I don't remember it being much more than a 30 minute job. I kinda remember having to get around all the wiring and hoses being the worst of it all.

 

[Saladin45]

Only thirty minutes? It seems like it would be more like a two or three hour headache.

 

[fyrlt67]

Like I said I don't really remember exactly how long it took but it didn't that long, I did pinch one of the o-rings so I had to pop it back loose to replace one o-ring in the top of the injector. Seriously I am sure it didn't take 3 hours and I know for a fact I didn't pull off the turbo. The turbo has only been off twice since I've owned the car, once for the alcohol injector and once to send it off for the TA33 upgrade.

 

[summit]

Seriously I am sure it didn't take 3 hours and I know for a fact I didn't pull off the turbo. The turbo has only been off twice since I've owned the car, once for the alcohol injector and once to send it off for the TA33 upgrade.

Are you missing the manifold heat shield on the pasenger side of the intake? I don't know how you can get to the pasenger side injectors with that shield in the way and the turbo has to come off to get it off. I guess you can wiggle and finagle it all and shortcut it a little. Still not a 30 minute job.

 

[fyrlt67]

Yep had to take the heat shield off, but not the turbo. Man I forget what I did yesterday I dont remember how long it took really couldn't have been 3 hours though, my attention span isn't that long

 

[1dollardog]

Well I'm deep into this one now. I took the turbo off (wanted to inspect it and the vacuum lines). The turbo has zero play in it. It must have been rebuilt before I got it because it is tight. Do I need to remove the coolent lines to remove the passanger side heat shield or will they bend out of the way enough to get the fuel rail and injectors out? Things are a little rusty in there so I would like to do some painting while this stuff is out. What paint do I need for the heat shield and various engine parts? Is there anything that can be done to the turbo and waste gate to spruce it up?
Thanks, Steve

 

[1dollardog]

Well I got the injectors and my TT chip installed today. When I removed my turbo I noticed that it sat kind of at a slight angle. Prev owner had removed the rear mounting bracket and not put it back on and only one nut was holding the turbo at the heat shield. . When I got the turbo off I noticed that the turbo adapter was crooked. I pulled it out and noticed the lower and upper lip where the O rings are were all chipped and broken. Looks like pressure has been blowing back by it too. Never assume that you are the first one to ever work on one of these cars, right . Luckily I had these extra parts in my stash. Got everything back together and low and behold I have exhaust leaks everywhere. Aparently the up pipe and the down pipe ends were conformed to the previous angle of the turbo. When I "straightened" the turbo it threw everything else back off. After a couple hours and a little encouragement from a mallet I have 99.9% of the exhaust leaks fixed. I only have the slightest noise where the up pipe meets the manifold, I'll keep working on that one. The car is much much smoother at idle now. If weather will ever clear up it might even see pavement sometime next week. All in all it was a productive day.

 

[TurboRegal84]

Once you take your turbo off a few times you will be a pro!

Do you have the stock inlet pipe? I found it quite helpful to use an exhaust crush gasket to seal up the header to inlet pipe connection.

 

[Jerryl]

Well I got the injectors and my TT chip installed today. When I removed my turbo I noticed that it sat kind of at a slight angle. Prev owner had removed the rear mounting bracket and not put it back on and only one nut was holding the turbo at the heat shield. . When I got the turbo off I noticed that the turbo adapter was crooked. I pulled it out and noticed the lower and upper lip where the O rings are were all chipped and broken. Looks like pressure has been blowing back by it too. Never assume that you are the first one to ever work on one of these cars, right . Luckily I had these extra parts in my stash. Got everything back together and low and behold I have exhaust leaks everywhere. Aparently the up pipe and the down pipe ends were conformed to the previous angle of the turbo. When I "straightened" the turbo it threw everything else back off. After a couple hours and a little encouragement from a mallet I have 99.9% of the exhaust leaks fixed. I only have the slightest noise where the up pipe meets the manifold, I'll keep working on that one. The car is much much smoother at idle now. If weather will ever clear up it might even see pavement sometime next week. All in all it was a productive day.

Well, the TT chip is typically an "open loop idle chip", and I suspect that this is one of the reasons the car is idling better, besides fixing the intake and exhaust leaks. :tongue:

I agree with you; You can NEVER assume or trust anyone, or any work previously completed on the car! With as many "hacks" around working on these cars, verify EVERYTHING!!

 

[Saladin45]

I agree. My car has had so many hands underneath the hood it took months of straightening things out to get it to 'normal'.

 

[1dollardog]

Do you have the stock inlet pipe? I found it quite helpful to use an exhaust crush gasket to seal up the header to inlet pipe connection.

Yeah its all original. I'll probably have to use one of these to finally get it sealed 100%. Right now its blowing the slightest bit back toward the head. I saw one of these one time that was so warped that it was in the shape of an egg.