63mm TB - Page 3 - ZR-1 Net Registry Forums

Locobob · 02-18-2008

Quote:

Originally Posted by Aurora40

I think only the 1990's had that. I'm pretty sure for '91 the vacuum stuff moved around a bit.

Yep - 90 only. The boss is still there on the later castings though - you could drill it out and add a fitting.

lbszr · 02-19-2008

Quote:

Originally Posted by Locobob

Yep - 90 only. The boss is still there on the later castings though - you could drill it out and add a fitting.

Drilling and putting in a fitting with loctite 620 worked good. Didn't feel like figuring out the replumbing.

Locobob · 02-24-2008

I'm doing a port job for Frank T. right now including enlarging the throttle bores to 63mm. Here is what the difference between stock size and 63mm looks like - area marked in red is to be removed.

02-24-2008	#23
Locobob Join Date: Jan 2004 Location: Portland, OR Posts: 1,047	Re: 63mm TB I'm doing a port job for Frank T. right now including enlarging the throttle bores to 63mm. Here is what the difference between stock size and 63mm looks like - area marked in red is to be removed. __________________ Robert ZR-1 Net Registry Oregon State Director 91 ZR-1 #431 Black/Black LPE 368