I6 Stroker - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 10-23-2005, 10:07 PM   #1
Join Date: Oct 2005
Posts: 47
I6 Stroker

I'm a noob, and I'm interested in a new engine. I've been lookin' at several options, and am most interested in the straight six stroker. Can it be carbureted, or does it have to be fuel injected? How much would it cost to get all the different pieces yourself and put it together, or is it just plain easier to get it put together for you? Any info is much appreciated.

yj_1988 is offline   Quote
Old 10-24-2005, 05:48 PM   #2
daddyjeep's Avatar
Join Date: Apr 2005
Location: Smethport, PA
Posts: 3,062
Everybody is a noob at one time or another. I do not know a whole bunch about the stroker kit. I did a little research once, but that was a while ago. Check out Clifford Performance. They are the one of the best companies out there for building I6's. Most of their stuff is for racing only, so be aware of local laws. Man was that hard to say.

87 YJ, 5.2/46RH/NP231, Custom 4 link/ Radius Arms, Ballistic Nitrogen Shocks, 35" Cooper STT
DaddyJeep build Thread:http://www.wranglerforum.com/f8/dadd...ld-122601.html
daddyjeep is offline   Quote
Old 10-24-2005, 09:23 PM   #3
H.G's Avatar
Join Date: Sep 2005
Location: brisbane australia
Posts: 327
there isa guy here in australia that has not so long ago stroked his engine to a 4.7l
go to www.ausjeepoffroad.com and do a search on stroker kit his forum name is madbuga also a guy called gordo.. search stroker under either of these names and your sure to come up with something.
Poo... its got more than just one use.
H.G is offline   Quote
Old 10-24-2005, 09:34 PM   #4
Join Date: Oct 2005
Posts: 47
Thanks, I'll be sure to read up on that site.
yj_1988 is offline   Quote
Old 10-25-2005, 07:39 AM   #5
3jeepguy's Avatar
Join Date: Aug 2005
Location: upstate ny
Posts: 119
try golan engines they are making stroker sixes that are puttin out V8 numbers
95 yj 4.0 4 inch bds and 1.5 shackle lift 33inch swampers for summer and 32 inch mudkings for winter 8500# milemarker winch and homemade high lift / light mount on hood

3jeepguy is offline   Quote
Old 10-25-2005, 11:36 AM   #6
Join Date: Oct 2005
Posts: 47
Golen does make some great ones, too bad the price is about the same as their V8s.
yj_1988 is offline   Quote
Old 10-25-2005, 12:47 PM   #7
Join Date: Oct 2005
Posts: 19
There are a few sites on building one. rockcrawler.com has one that will give you some basic info.

The basic 4.0 stroker is a 258 cam & rods and 4.0 pistions. As you bore out the cylinders you'll have to upgrade the injectors and do some work with the map sensor as well as air in and out of the engine. At .060 over you'll have a 4.7

The following pages have more detail.

How bout a 5.0 out of a 4?

5.0L Very high-buck stroker - bet this sucker warms up quick....

4.06" offset-ground stroker crank
Jeep 4.2L 5.875" rods
Small Block Chevy UEM-KB142 hypereutectic pistons
11.1:1 CR
Crane #751111 238/248 degree solid lifter cam
Ported big valve 2.02"/1.60" cylinder head
OEM 0.051" head gasket
0.038" quench height
Flometrics F&B 68mm billet TB
3.0" exhaust system
Ford 30lb/hr injectors with adjustable FPR or MAP adjuster
Custom PCM programming
328hp @ 5250rpm, 375lbft @ 3800rpm
Jeepcrazy is offline   Quote
Old 10-25-2005, 11:23 PM   #8
Join Date: Oct 2005
Posts: 47
How high buck is very high buck? Thanks for the sites man, I'll be reading those in the near future...football ends this friday night. =[
yj_1988 is offline   Quote
Old 10-26-2005, 06:44 PM   #9
Jack Lives Here!!!

WF Supporting Member
1BLKJP's Avatar
Join Date: Apr 2005
Location: Phoenix, AZ
Posts: 7,764
Originally Posted by yj_1988
How high buck is very high buck? Thanks for the sites man, I'll be reading those in the near future...football ends this friday night. =[
For something like that probably like 4k or 4500.
Jack Hickman

President - Arizona Off-Highway Vehicle Coalition
Vice-President - ASA4WDC
Arizona Rock Rats
1BLKJP is offline   Quote
Old 11-05-2005, 01:17 PM   #10
Join Date: Nov 2005
Posts: 18
Originally Posted by yj_1988
Golen does make some great ones, too bad the price is about the same as their V8s.
Any stroked I6 is going to be that price or more. Hesco and Clifford are the top two in building serious I6 engines, with Hesco having been selected by Mopar to build all their racing and performance I6 engines, along with a slew of hi-po aftermarket parts for the I6 Mopars, including the MPI conversion kit for Mopar.

If you are "sensitive" about the price in any way, don't even look at stroker I6s. Even if you do the work yourself, the parts alone will normally set you back well over $2000.

If you want more hp than you have, just get a low mileage 4.0L hi-po engine out of a '92-'95 YJ at the JY. You should be able to pick one of those up for $800-$1000 in good shape. Remember to get the wiring harness and the ECU at the same time.

Eliminates the Carter BBD (you REALLY want to do this) and replaces it with the MPI system AND you get better heads, more flow, better mileage and better overall performance.
jeeepguy is offline   Quote
Old 11-07-2005, 08:10 AM   #11
naviathan's Avatar
Join Date: Oct 2005
Location: Eastern NC
Posts: 145
Send a message via Yahoo to naviathan
I'm not sure what you are getting for mileage, but my HO 4.0L gets about 16-17mpg in the city and maybe 18 on the hwy. These numbers never change either. Whether pulling a trailer, off roading, dogging it, doesn't matter. I didn't really consider that good mileage, but the performance is awesome. This engine has enough torque with the stock gears to pull a house.

SOLD - Maybe I can afford this game when I'm old an rich.
naviathan is offline   Quote

Thread Tools

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
rebuilding your engine?? Get Stroked!!! jeeper95yj YJ General Discussion Forum 6 01-01-2014 05:47 PM
Wanna Make my jeep beast in the engine department ! Wrangla416 TJ General Discussion Forum 63 08-04-2010 03:41 PM
4cyl stroker? herbert.weaver YJ Tech Forum 15 01-16-2009 01:31 PM
Stroker build 4.0l sahara TJ General Discussion Forum 6 03-25-2008 09:42 PM
YJ TRANSMISSION OPTIONS w/ STROKER jpdocdave YJ Tech Forum 8 03-12-2008 11:48 PM

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 11:00 PM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC