2005 LJ Rubicon Revival

[duck454ss]

well the engine should be done here by the end of the month.....


anyone interested in helping with an engine swap?

[Graveltravels]

If I was down that way, and not in the middle of my own mess, I'd come give a hand.


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[duck454ss]

Well..... Its been forever since i've had an opportunity to post about my build.


After install and initial start up the engine had a tapping sound. Initially we fiured it was the rockers hitting the cover so i bought an aluminum cover. This didnt fix the tapping.... then we machined releifs into the valve cover... didnt help...

we dropped the pan just to see if anything was obviously wrong. found that Cyl 1 piston was able to rock within the cylinder on its own. very un-cool.

this was pretty much a year ago and its been a cluster fk getting things sorted. i'm now ditching the blower idea, staying N/A and going to 10.5:1 CR with new pistons. The bad cylinder only needed a hone job so only one new piston was needed.... but you try getting a single piston from a manufacturer. so now i'm committing to replacing all 6 pistons just to get this pig rolling.


oh and on top of it all christmas day my wheels and tires were solen off my rig while it was parked at the shop...... wooooooo.


i just want to go wheeling.

[Vinman]

Glad to see it’s finally getting sorted out and it sucks to hear about losing the tires and rims.

[duck454ss]

With the whole wheel and tire theft i'm debating on going with 35's or 37's...... i know eventually i'll need to truss and tube the axles to support 37's. but is there reason to step down to 35's till axle reinforcement is done.

I'd also like to run Yokohama X-MT's but not sure if those are too aggressive. Thoughts?

for wheels i'm going to use hutchinson rock monsters. do it once and do it right.

[hps4evr]

With the whole wheel and tire theft i'm debating on going with 35's or 37's...... i know eventually i'll need to truss and tube the axles to support 37's. but is there reason to step down to 35's till axle reinforcement is done.

I'd also like to run Yokohama X-MT's but not sure if those are too aggressive. Thoughts?

for wheels i'm going to use hutchinson rock monsters. do it once and do it right.

X-MT ‘s are perfect!

[duck454ss]

X-MT ‘s are perfect!

37 X-MT's it is!!!! now to see how long it takes to get them.

[Immortal]

The Rock Monsters are great. Really easy to remove the hub caps though. I think I have half of one left.

[duck454ss]

lets see what kind of feed back i can get.

I did some digging around and came to the conclusion that my dynamic compression ratio with a static of 11.25:1 is comparable to a 9.35:1 static with 3-4psi boost. That means with the Edelbrock aluminum head I should be able to get away with medium grade fuel. Below are my numbers and if i'm on the right track and i'm safe with a 0.0285" quench.


9.446" Deck Height
3.910" Bore
3.895" SCAT Crank
6.125" SCAT Rods
0.040" cosmetics MLS gasket (3.950" bore)
1.385" Piston CD
Comp 235 cam (IVC 54 ABDC)

Piston is 0.0115" above Deck
Quench 0.0285"

14cc dish - SCR = 11.25:1 DCR 8.99:1
31cc dish - SCR = 9.35:1 DCR (w/ 3psi) 8.89:1

[hps4evr]

I wouldn’t be afraid to run 91 octane. It’s costs a little more but if you don’t drive it everyday then you may as well have the most power out of it and enjoy driving it every single time.
Especially when you’re running 37’s! Lol

[duck454ss]

I wouldn’t be afraid to run 91 octane. It’s costs a little more but if you don’t drive it everyday then you may as well have the most power out of it and enjoy driving it every single time.
Especially when you’re running 37’s! Lol

not so much worried about what fuel to run as is 11.25:1 going off the deep end. running premium fuel just means i pack some octane boost if i'm going into areas where i can only get 87.

[duck454ss]

Yay!!!!!!! semi good news. my pistons have finally been made. or so i'm told. just need them the be shipped from the states.

[Grover]

Yay!!!!!!! semi good news. my pistons have finally been made. or so i'm told. just need them the be shipped from the states.

Just read your whole thread.. what a journey Hope it all works out in the end.

Who is making your Pistons? Russ Potinger? I'm building a stroker and emailed him a couple times over the last two weeks.. haven't heard anything from him

Early in your build I see you were debating what throttle body to go with. What did you end up doing? I've settled on a 68mm tbody from a 4.7 dodge v8. A company called TDS makes an adapter which I should receive early next week. Seems like a good way to go.
https://www.tdsideas.com/store/p2/Throttle_Adapter%2C_Jeep_4.0L_Intake_to_Dodge_4.7L_Throttle.html

Your piston slap experience reminded me of this (stroker with same issue):
https://www.youtube.com/watch?v=VAkmlvW9fYA

What machine shop did you use? Did you wind up finding a torque plate?

My build will be pretty tame in comparison. My build thread:
https://www.jeepstrokers.com/forum/viewtopic.php?t=6250

Good luck!

[Jrama]

Early in your build I see you were debating what throttle body to go with. What did you end up doing? I've settled on a 68mm tbody from a 4.7 dodge v8. A company called TDS makes an adapter which I should receive early next week. Seems like a good way to go.
https://www.tdsideas.com/store/p2/Throttle_Adapter%2C_Jeep_4.0L_Intake_to_Dodge_4.7L_Throttle.html

Good luck!

I did a 4.6 as well and never bothered with the throttle body, I read up that the stock TJ throttle Body and manifold are already more than capable of flowing enough air for a stroker. I did however spend money on an upgraded cam shaft. I think you are re-using the stock one?

My 4.6 Runs on 87 Octane perfectly fine and is much nicer to drive on the road then the stock 4.0. Even though its not quick by any means.

[duck454ss]

Just read your whole thread.. what a journey Hope it all works out in the end.

Who is making your Pistons? Russ Potinger? I'm building a stroker and emailed him a couple times over the last two weeks.. haven't heard anything from him

Early in your build I see you were debating what throttle body to go with. What did you end up doing? I've settled on a 68mm tbody from a 4.7 dodge v8. A company called TDS makes an adapter which I should receive early next week. Seems like a good way to go.
https://www.tdsideas.com/store/p2/Throttle_Adapter%2C_Jeep_4.0L_Intake_to_Dodge_4.7L_Throttle.html

Your piston slap experience reminded me of this (stroker with same issue):
https://www.youtube.com/watch?v=VAkmlvW9fYA

What machine shop did you use? Did you wind up finding a torque plate?

My build will be pretty tame in comparison. My build thread:
https://www.jeepstrokers.com/forum/viewtopic.php?t=6250

Good luck!

I went with the BBK (edit.. had BDS... they dont make TB's lol) TB because the 05-06 went to a different IAC set up and makes things finecky.

Russ is a solid dude and is swamped lately. If you give him a call he will get back to to. kinda like wrangling a cat some days.

I'd prefer not to name the machine shop due to some of the drama with my build. He's good at what he does but its been a crap show. He has access to a torque plate.