Hey,

I picked up a Buick Grand National Turbo for my LS, and i am wondering what PSI the wastegate is set up for...It has never been modified (yet), and if anyone knows an easy way to modify this can they also let me know...

Thanks in advanced...

Johan

 

From a reliable resource I was tol 8 psi ......

hope that helps

 

What kind of flange is on the end of that? Are you going to custom fab a header?

 

to modify the wastegate get a boost controller ... that turbo is a decent size to so it shoudl work nice

 

my buddy runs this turbo a CRV motor it spools fast but we did a little custom set up i made him a plate to block off the internal wastegate so that he runs a external this way you could run boost controler more easy
it was really easy to do and works good so for

 

haha, but internally gated ones though don't melt parts in the engine bay LOL

Kyle, that was totally sweet!! BEST SETUP yet!!!

 

8 PSI? hmm...i found this web site (lost it in the meantime) that had a step by step desciption of how to mod the wastegate. I printed it out, so i still got it...looks good...couple of other people have told me to just get a boost controller...i dont know yet, im not in to much of a hurry since its winter...

thanks for the help...

Johan

 

a boost controller can usually only increase the psi where the wastegate opens....

 

im still learning...and i forgot to mention that i am getting all the pluming and manifold custom made by a buddy, who did his VW himself. Cant wait...

l8r
Johan

 

welcome to the grassroots of motorsports

 

right....do you guess meet in the winter??like, your club then?

 

Yeah, the true members... they do meet every Wednesday and there is an informal meet Fridays.

We also meet here in Windsor almost every week - very informal as well.

 

im from niagara (as you probably have read) just wanna check your club out...

Johan

 

The meets thin out considerably due to the cold, but ppl still get together - check Discussion forums for meet times and location.

 

cool...so just wed.? or other days aswell?

 

next time we meet will have a cook off on his motor then B

 

you should pm G-Force. he owns a 9 second T-Type (GN). he also used a stock GN turbo on his 91' DA last year. with a shitty set-up, he made 223whp 221wtq at 11psi (i think) with shitty (Just Garbage) cams, no tuning etc. it's a decent turbo if you get it for cheap. he even had the half *** GN intercooler on his car also.