I just got a supra turbo i need help please!!!

[cre]

Replace the valve cover gaskets first. They're probably stock in which case they've most likely compressed over the years.

You may replace the screws with M6 bolts. The philips head screws were used in order to prevent over tightening and make it easier to service. The torque spec is only 22 INCH lbs. Do not over torque them or they will leak again. Also don't forget to put a small dot of RTV in the corner where the #1 cam cap rises up from the head.


Yes, an exhaust leak before the turbo can cause low boot. Another possibility is a weak spring in the actuator. As far as I know you cannot get a replacement actuator... you can add an aftermarket universal if yu fabricate a custom bracket or you could add a boost controller (a manual boost controller can be built very cheap!). Get the exhaust leak under control first.

[bradenman1]

Originally Posted by cre

Replace the valve cover gaskets first. They're probably stock in which case they've most likely compressed over the years.

You may replace the screws with M6 bolts. The philips head screws were used in order to prevent over tightening and make it easier to service. The torque spec is only 22 INCH lbs. Do not over torque them or they will leak again. Also don't forget to put a small dot of RTV in the corner where the #1 cam cap rises up from the head.


Yes, an exhaust leak before the turbo can cause low boot. Another possibility is a weak spring in the actuator. As far as I know you cannot get a replacement actuator... you can add an aftermarket universal if yu fabricate a custom bracket or you could add a boost controller (a manual boost controller can be built very cheap!). Get the exhaust leak under control first.

Is the #1 cam the one closest to the fire wall or the one closest to the radiator.
How would I go about building a manual boost controller? I. May have the turbo rebuilt by powerfab with a bigger wheel inside for a little more boost and that way I don't have to modify the flange.

Another thing I wanted to know is how do I put a blow off valve in I live the sound of them and would like to incorporate it into the stock set up with aluminum piping instead of rubber hoses. Is this possable with the turbo being internaly wastegated stock from factory? This is my 1st supra and first turbo vehicle please correct me if I make any mistakes this is something I really neeed to learn.

[cre]

Originally Posted by bradenman1

Is the #1 cam the one closest to the fire wall or the one closest to the radiator.

The culinders and everything else is numbered front to back. Anyway, it's the only thing the valve cover goes up over, you just need to add a little dab of RTV silicone to the tight corner where it comes up.

Originally Posted by bradenman1

How would I go about building a manual boost controller?

Google "diy boost controller"; if you're unsure of the accuracy of the instructions you find post a link and I'll look it over.

Originally Posted by bradenman1

I. May have the turbo rebuilt by powerfab with a bigger wheel inside for a little more boost and that way I don't have to modify the flange.

I am unfamiliar with that company; Make sure they do reliable work. I (as well as most Supra owners) advise not going larger than a 57 trim. Personally, I'd go with a company that has a lot of experience specific to the CT-26.

Originally Posted by bradenman1

Another thing I wanted to know is how do I put a blow off valve in I live the sound of them and would like to incorporate it into the stock set up with aluminum piping instead of rubber hoses. Is this possable with the turbo being internaly wastegated stock from factory?

BOV and WG have nothing to do with one another... neither one will affect the operation of the other. There's nothing to installing an aftermarket BOV, install pipe with proper flange, mount BOV, connect the vacuum hose which ran to the stock BPV, plug BPV's return and the opening on the manifold where the pressure was venting from.

Do keep in mind that loud BOVs are cop magnets (ugh) and you may experience issure when letting of the throttle (stumbling or stalling) as the ECU thinks it's about to receive air which has actually been purged.

Originally Posted by bradenman1

This is my 1st supra and first turbo vehicle please correct me if I make any mistakes this is something I really need to learn.

Heh, oh we will.

[bradenman1]

Originally Posted by cre

The culinders and everything else is numbered front to back. Anyway, it's the only thing the valve cover goes up over, you just need to add a little dab of RTV silicone to the tight corner where it comes up.



Google "diy boost controller"; if you're unsure of the accuracy of the instructions you find post a link and I'll look it over.



I am unfamiliar with that company; Make sure they do reliable work. I (as well as most Supra owners) advise not going larger than a 57 trim. Personally, I'd go with a company that has a lot of experience specific to the CT-26.



BOV and WG have nothing to do with one another... neither one will affect the operation of the other. There's nothing to installing an aftermarket BOV, install pipe with proper flange, mount BOV, connect the vacuum hose which ran to the stock BPV, plug BPV's return and the opening on the manifold where the pressure was venting from.

Do keep in mind that loud BOVs are cop magnets (ugh) and you may experience issure when letting of the throttle (stumbling or stalling) as the ECU thinks it's about to receive air which has actually been purged.



Heh, oh we will.

Oh. I was under the assumption that a blow off valve was a waste gate just mounted away from the turbo itself.

Ok so today I took off the valve covers the came look great verry little scoring and pretty clean but I'm going to degrease the valve covers and the cwhile I'm in there.. I also found a few verry dissappointing things in this process ;(

First off there are a few cremped hoses that need to bbe fixed ( no big deal). But then there's a hard pipe type hose that goes from some type of valve into the manifold that crosses over the block. It was hard plastic and wraped in electrical tape. Idk what to call it to get it ordered.

Then after I got all the clutter off the valve covers I took the wires off the sp plugs and 3 of the wires that run from the coil packs broke off on the plugs and on the inside where the plugs are its flooded with oil. What the heck dso I do about this? Iv heard its some what normal for it to happen but its quite a bit of oil in there. Any idea where the oil is leaking in from?

Then I decided to look in the trunk and discovered it is not in existance the entire spare tire holding area is rusted through I can see the muffler and gas tank from the back seat when the cover is out. And the area a little to the right by the fuel pump is starting to rust through to : ) idk what to do about this. This car is turning into more of a project everytime I try to fix something...

Thanks for all the replys by the way . Thewy have been verry helpfull

[cre]

I'm only going to cover a couple point, hopefully someone else will chime in with more info for you.

If you need help with a part, post a picture.

Oil in the plug galley is not unusual when the valve cover gaskets are leaking. That is the most likely source. The other source is the four massive plugs holding down the central cover. Start with getting as much oil out of there as possible with rags and perhaps siphon, then pull the spark plugs and just let the last few drops in each plug recess to empty into the cylinder (I hope there not a lot of dirt in there with the oil). Clean the plugs and wires thoroughly, reinstall the plugs (DON'T OVER TIGHTEN THEM) and run the engine to burn off what drained into the cylinders.

As for the rust, I don't know... The easiest fix IMO would be to cut out what's bad and weld in new sheet... otherwise, if it's more extensive either just cut it all out and weld in a new custom trunk bed or cut one from a chassis at a salvage yard and weld that in.

Check the rear tire wells for rust damage as well.

Your hatch seal is probably leaking if that much water's been accumulating in there.

Yes, cars this old are rarely easy on the wallet.

[bradenman1]

Originally Posted by cre

I'm only going to cover a couple point, hopefully someone else will chime in with more info for you.

If you need help with a part, post a picture.

Oil in the plug galley is not unusual when the valve cover gaskets are leaking. That is the most likely source. The other source is the four massive plugs holding down the central cover. Start with getting as much oil out of there as possible with rags and perhaps siphon, then pull the spark plugs and just let the last few drops in each plug recess to empty into the cylinder (I hope there not a lot of dirt in there with the oil). Clean the plugs and wires thoroughly, reinstall the plugs (DON'T OVER TIGHTEN THEM) and run the engine to burn off what drained into the cylinders.

As for the rust, I don't know... The easiest fix IMO would be to cut out what's bad and weld in new sheet... otherwise, if it's more extensive either just cut it all out and weld in a new custom trunk bed or cut one from a chassis at a salvage yard and weld that in.

Check the rear tire wells for rust damage as well.

Your hatch seal is probably leaking if that much water's been accumulating in there.

Yes, cars this old are rarely easy on the wallet.

I havnt checked the fenders verry well yet I will after school and post some pics of the hoses I need

I read some where in these forms that you can takee the allen bolts out of the head and get an oil drain plug gasket and install it with the bolt to prevent leakage into the plug gally.

I'm not really sure if the turbo needs to bew rebuilt or not. I'm sure it does its been in the car sence it was built in the factory 20 years and 237000 miles ago. Tonight were going check the coolant for oil it seemed really dirty and a dark dark green color to it.

The oil/intercooler for the turbo has water in it doesn't it? I'm not sure if its leaking or if the over flow spilt onto it.

Is standard engine degreaser safe for use on the cams and valve covers? I want to spray them down and clean them up with some s.o.s pads and a wire brush.

[bradenman1]

Another thing I wanted to knpw is What other parts for the turbo should I replace while its off getting rebuilt? I am not familliar with the valves and actuators that may be external from the turbo that should be serviced like the turbo.. I'm willing to replace it all to get my baby runnng 100% : )

[bradenman1]

Hey guys sorry its been so long sence I posted anything iv had som problems at home that has limited my time and prevented me from working any on the car. Ill be taking some pictures and posting them today after school. Hopefully we can revive this thread : )

[bradenman1]

Soo today I took my exhaust manifold to my auto tech class to sand it down some and I looked at the side that the turbo mates to after I sanded it. And there's a crack that goes through the exhaust manifold and streatches down the length of the mating surface and down one of the exhaust ports on the inside. Soo now I need a new exhaust manifold.

I'm glad I cought it before I put the turbo on it and blew it up. I was wooundering if I should try to find a stock one at a pick a part place or if there's an aluminum one that I could upgrade to.

Ill try to get those pictures up tonight I just havnt had much time.

P.s. the manifold studs are seating well in the block and are looking great : )

[radical89supra]

as to your turbo issue i have a 1989 supra turbo that i could never get to boost more then 3 lbs of boost, come to find out the cat was clogged,after that it boosted fine of course i have a new turbo and there could be other issues but if that is the original cat i would say that is at least half of your problem.