ZR-1 Net Registry Forums  

Go Back   ZR-1 Net Registry Forums > C4 ZR-1 > C4 ZR-1 Technical Postings

Reply
 
Thread Tools Display Modes
Old 10-03-2015   #1
RussMcB
 
Join Date: Jan 2015
Location: Marietta, GA USA
Posts: 1,160
Default Moving engine to gain header/steering clearance

I've read a few posts that mention "centering" or shimming the engine to gain clearance between the header tube and steering tube.

Any suggestions from someone who's done this?

I have OBX headers. I dimpled the tube for clearance, and it's probably okay, but I can see they have touched each other since the install.

I can envision shimming the the driver's side engine mount to raise that side. I'm not as clear about how to "center" or move the engine. Would that be, loosening the two lower engine mount nuts, then using a 2x4" or something to persuade the engine towards the passenger side? Would the engine mount holes need to be filed a tiny bit to allow the movement?

Thanks, y'all.
__________________
Russ McBride, [COLOR="Red"]Car Sold 8/2020[/COLOR] #1635, Marietta, GA USA, 1991 ZR-1, #766 (bought 1/1/2015)
MS3-Pro, OBX, SW X-Pipe, Borla, Hurst, SLP, Goodyear F1 GS-D3, Kenwood. HOTB 2016Q3
[IMG]http://zr1.net/forum/picture.php?albumid=316&pictureid=2873[/IMG] [IMG]http://zr1.net/forum/picture.php?albumid=336&pictureid=2985[/IMG]
RussMcB is offline   Reply With Quote
Old 10-03-2015   #2
Demps
 
Demps's Avatar
 
Join Date: Jan 2006
Location: Niceville
Posts: 998
Default Re: Moving engine to gain header/steering clearance

Here's a technique:

Recommend: 10mm shorty box-end with ratcheting closed end!!! Cheater tip: You can remove stock manifolds without taking off heat shields.
--Gain access to a raised car--Jack, lift, etc
--remove front tires
--remove wx strip & center fender well section molded piece
--remove air duct and MAP sensor
--[under] remove two 18mm (?) motor mount nuts--if you jack engine high enough they will mis-align but no big deal
--2x4 in front of oil pan and jack
--start removing manifold bolts
--[strongly recommend] double nut header stud, remove, apply thread sealant, reinstall


Ted
Demps is online now   Reply With Quote
Old 10-05-2015   #3
RussMcB
 
Join Date: Jan 2015
Location: Marietta, GA USA
Posts: 1,160
Default Re: Moving engine to gain header/steering clearance

I made a simple shim out of 3/16" thick plate steel, drilled a hole in it and slipped it under the driver's side engine mount. It seems to have helpe provide a little more clearance. We'll see.
RussMcB is offline   Reply With Quote
Old 10-07-2015   #4
Paul Workman
 
Paul Workman's Avatar
 
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
Default Re: Moving engine to gain header/steering clearance

Quote:
Originally Posted by RussMcB View Post
I made a simple shim out of 3/16" thick plate steel, drilled a hole in it and slipped it under the driver's side engine mount. It seems to have helpe provide a little more clearance. We'll see.
My guess is the contacting has been only during deceleration, i.e., engine braking. That shim may do the trick; is what I was going to suggest as well. But, before I did suggest it, I wanted to look on mine to see what that was going to do to the passenger side clearance between the cam cover and the AC box (for one example), or make aligning the C-beam holes more difficult? Prolly no big deal. Just thinking "out loud".
__________________
Good carz, good food, good friendz = the best of timez!

90 #1202
"FBI" top end ported & relieved
Cam timing by "Pete the Greek"
Sans secondaries
Chip & dyno tuning by Haibeck Automotive
SW headers, X-pipe, MF muffs

Former Secretary, ZR-1 Net Registry
Paul Workman is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:36 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright ZR-1 Net Registry 2020