Upgrading Turbo ??

[scgnx]

I read the thread about John Craig Turbo's and it got me thinking about upgrading. My question is will moving up to that large of a turbo work with my combo ? The car is mostly street driven, but sees the track a couple of weekends a month in the summer. I'm mostly concerned with increased turbo lag.

 

[azgn]

prolly wouldn't want to go any bigger than you got unless you also upgrade your converter, heads, injectors etc...your combp should run 11's as it is

 

[turbo buicks]

scgnx, what do you currently run in the 1/4? and you say you have ZR-1 brakes, do the rotors just bolt right in or is it the whole system?

 

[MSDGN]

That was the thread I started...my combo is similar...and I upgraded my PTE-51 to a TE-62...you will need a different converter...mine's a 3200 9/11...but I disagree Woody about the injectors...50's work fine with the TE-62...also headwork would be beneficial but not needed...

 

[azgn]

50's will go mid-low 11's no prob....I was thinking a bigger upgrade, like a '63 or '45

 

[scgnx]

Turbo buicks..I actually have the ZR-1 calipers (front) with 12 inch rotors. I went with a spindle from a caprice (b-body) and Hotchkis
A-arm to get the proper geometry. The rear disks are a Baer kit, which by the way works great on the street. Unfortunately, it doesn't hold much boost at the track. My best ET is 11.84 @112 w/1.95 60'.. My Art Carr 9.5 non-lock up wouldn't be a good match with the 62 ?? Is this correct ? Just trying to keep the costs down to a minimum. I do plan on headwork in the near future as well..

 

[MSDGN]

What's the stall on that converter?...I would say a minimum of 3200 is needed for a 62 turbo...I have no lag issues with my combo...

 

[scgnx]

I've had this convertor since 94', I think its 3200 or 3400 stall. So it sounds like my convertor should work with the 62. How much does the John Craig conversion run ?