NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Other Technical Forums > Jeep Street and Performance
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

Jeep Street and Performance Do you like to go fast in your Jeep?

Thread Tools Rate Thread Display Modes
Old March 12th, 2005, 11:53
Root Moose's Avatar
Root Moose Root Moose is offline
NAXJA Forum User
Join Date: Jul 2003
Location: ON, Canada
Posts: 3,736
Renix block for Stroker?

Is a Renix vintage 4.0 block worth a damn for a stroker build?

Reply With Quote
Old March 12th, 2005, 12:17
Gil BullyKatz's Avatar
Gil BullyKatz Gil BullyKatz is offline
NAXJA Forum User
Join Date: Apr 2003
Location: 2003UB313 Planet ERIS
Posts: 4,899
Re: Renix block for Stroker?

I certainly hope so....

The common consensus seems to be the 4.0 blocks are pretty much the same although there are arguments regarding wall thickness in the newer blocks...

If you're not overboring, or doing it conservatively... You should be OK

Your bigger concern should be choice of head/throttle body/ECU
Reply With Quote
Old March 12th, 2005, 12:42
Dr. Dyno's Avatar
Dr. Dyno Dr. Dyno is offline
NAXJA Forum User
Join Date: Aug 2003
Location: Al Ain, UAE
Posts: 3,446
Re: Renix block for Stroker?

Any 4.0 block will do as long as it isn't cracked, and the cylinder bores/main bearing saddles are straight.
A 0.030" overbore will give you 4587cc (4.6L) and a 0.060" overbore will give you 4657cc (4.7L) from a stroker. Ask the machine shop to magnaflux the block for cracks and check if the main bearing saddles need to be align bored. Align boring shouldn't be necessary in at least 99% of cases.
Here's my little beauty before it went into my Jeep:

It's not as pretty as Gil Bullykatz's baby blue block though and it doesn't wear diapers either.
Dino's "Mean Green Machine"
1992 XJ Laredo 4-dr - 4.6L I6 HO Stroker - 182k miles - AX15, NP231, D35c, D30

263hp@4900/321lbft@3300-3800, 1/4 mile = 14.41@95.5, 0-60 = 5.7secs
Websites - Jeep 4.0 Performance, 4.6L Stroker Build-Up, Dino's Jeep Tricks
Reply With Quote
Old March 12th, 2005, 19:21
BLSXJ's Avatar
BLSXJ BLSXJ is offline
NAXJA Forum User
Join Date: Dec 2004
Location: Windsor, ON
Posts: 101
Re: Renix block for Stroker?

I'm in the middle of the install of my stroker right now. I used a 88 block (renix) and a 91 head. and I'm installing it in a 91 XJ.

to only differnce right now in the blocks is the 88 block does not have a mounting points for the ignition coil.
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Non-HO (Renix) Block Casting Change? ratherbcamping OEM Tech Discussion 4 February 6th, 2005 10:22
H.O. heads on my stock, renix block BPB Modified Tech Discussion 3 April 4th, 2004 16:54
HO TB and Renix block? CW Modified Tech Discussion 1 October 3rd, 2003 03:40
A4 Midget Block? 4 cylander block I saw in the performance cat... Ghost Non-Tech / Off Topic 0 August 12th, 2003 07:36
Welding to engine block? BlackJack95 OEM Tech Discussion 27 July 20th, 2003 21:43

All times are GMT -7. The time now is 06:30.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014