How to shim the CT26 Wastegate?

[siman]

I searched for an extended period of time today and could not find a thread on exactly HOW TO SHIM the wastegate....

I am waiting on the CT26 shims from MDC ( and a new 02 sensor) and decided to jump the gun and figure it out before I get the parts in.

Anyone, can you help me figure out where the shims actually GO? :icon_conf

man, I sound like a newb asking this question...but I havent thought about acutually doing it until I bought them from MDC....hehe

-Jonathan Mann

 

[doom26464]

right where the wastgate accurator goes. Its kinda gay becauses Supras.com has been temporly down and they had a perfect right up with pics.

But i'll give it my best shot
1.) take the accordian hose off of the turbo.
2.)the wastgate accurator (right below the tubro inlet) has 2 bolts on it, remove thoses bolts
3.) stick washers(how ever many u want) in behind the wastagate accurator and then stick the bolts back together again
4.) put everything back to gether and enjoy!

here is the best pic i could get:

 

[shaeff]

here ya go clicky the pic below, it shows both spots where shims go.

edit: my pic is BETTER!!! mwhahaha! i'm just mad because you beat me to it!

-shaeff

 

[siman]

oh, ok. Thats simple enough!

Thanks guys!

heheh

-Jonathan

 

[lagged]

heh :keeps mouth shut:

 

[siman]

that was not funny lagged. :icon_surp

 

[lagged]

ohhhhh dont worry it wasnt ment to be funny :icon_razz

i censored my self to spare peoples feelings.

 

[siman]

ohhhhh dont worry it wasnt ment to be funny :icon_razz

i censored my self to spare peoples feelings.

ok 19 year old :icon_bigg

 

[Jspec7m88]

so question, i just got the kit in from MDC and i was wondering what kind of differences it is making when you guys are installing these...also...1,2,4 and 7...what would be best? i'm sure that using the 7 would be on the edge of pushing it...or not?

 

[shaeff]

it's an incredible difference when you turn up the boost. every car is different, as to how many shims/what psi you can push. experiment with it until you get it right.

-shaeff

 

[supraman7mgte]

yup,i got about 10 psi now by adding a few washers. i hear that it might stress the actuator,so its good for now until something breaks!!

 

[jester1341]

haha....by the time you want 12, 13, or even more out of you[hopfully] rebuilt CT26 snag a MBC and leave one or two on there to prevent it from dropping off close to redline

john

 

[johnathan1]

yea, i put 5 washers in the first time, and haven't touched them since...:evil2:

 

[Jspec7m88]

okay...so nobody has really said anything back on it...but what would be considered "hot" zone(unsafe)...10mm? i was originally going to do 5...because i heard that 7 is pushing...but i'm hearing a lot of different things.

 

[shaeff]

if you put too many on, the bolts won't go back in. (not long enough) put 4 on there, and if you want more, then put more on. i think 5 is about the max for the stock bolts.

personally, i think you'd be better off just getting a MBC... they're cheap, and effective. dr. jonez makes a good one. i shimmed my wastegate simply to hold my max boost until redline.

-shaeff

 

[stratoayu]

just start out with a 5mm and go from there..every car is different like many have said..

 

[Jspec7m88]

*SHAEFF*-the kit is from MDC, lol. sorry, i didn't know if i had mentioned that or not...but yeah, i've got the longer bolts...1mm,2mm,4mm,7mm..2 of each.

 

[MassSupra89]

I put 3 washers in...brought it to about 9-10psi.
The boost comes later in 1st gear(dont know if everyone experianced that)
But it builds quicker and harder in every other gear, holdind the boost alot longer.

 

[shaeff]

oohh. haha. my bad, i probably should have read more carefully. in that case, start out with the 4mm shims, then go for the 7's.

-shaeff

 

[Jspec7m88]

sounds good, shaeff. i "was" going to start w/ 5...but i'll be safe...before the boost leak occured, i was peaking at 14psi w/o a boost controller or anything...so i am anxious as to what it will be . thanks.