Re: Turbo questions - K24, WG Spring etc.

["Nate Stuart" <nathan.stuart@maine.edu>]

>     I have recently modified a KH wastegate with a threaded perch on top
so
> that a preload can be placed on the spring making it adjustable.  If
anyone
> is interested in seeing this I could take a picture or give a description,
> but I do not have a web site to post it to.  If anyone wants to volunteer
> their website I can send you a picture.
>     It is basically quite simple...I redrilled and tapped the top threaded
> hole to 9/16-12, and welded the spring perch to the bottom of the bolt.  A
> jam nut on top, and a slit cut in the top of the bolt (to be held with a
> screw driver) keeps it from turning once adjusted.  Definitely a lot
easier
> than using shims each time you want to make an adjustment...

Did the same to my MC waste gate. Poped the cap off the top of the wastegate
covering the rest of the threads for the spring perch allen bolt. Removed
the allen bolt, got a 12x1.2x50 mm bolt, and some matching nuts, then cut
one of the nuts in half (a little tricky) and tightened each half around the
spring perch after the bolt was threaded though the top of the wastegate.
Now I just turn the WG bolt to adjust spring pre-load. I didn't get any
higher boost from this, it just built up faster, esp. in 2nd and 3rd.

Later,
-Nate

'87 5kcstq
'86 4kcsq gf's