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New 4.2L mini-stroker recipes

Newbies, and basic Stroker Recipes... Get started with your first stroker here!!
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jpradcliffe
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Re: New 4.2L mini-stroker recipes

Post by jpradcliffe » March 31st, 2018, 6:10 pm

Ok, that sounds great Russ! I'd also like to pick up the 68-235-4 cam on 114° lobe separation angle from you and did you say you make a spacer for the crankshaft snout as Well?

Russ Pottenger
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Re: New 4.2L mini-stroker recipes

Post by Russ Pottenger » March 31st, 2018, 10:04 pm

Sounds good Josh.
I do make a keywayed billet aluminum spacer for your crankshaft.

Shoot me a call or email and I'll work on gettin some stuff out to ya.

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jpradcliffe
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Re: New 4.2L mini-stroker recipes

Post by jpradcliffe » October 3rd, 2018, 7:11 pm

Awe man Russ. Now that I'm almost done with my build, i wish that i had gone with forged pistons instead of these SEALED POWER PISTONS (P/N: 677AP+.030)

Dang.

Maaadman3
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Re: New 4.2L mini-stroker recipes

Post by Maaadman3 » December 4th, 2018, 10:30 am

I've been kind of studying this post the last couple days but haven't really noticed any mention of this being done on a WJ.
Is it still possible in this model? Would really like a bit more passing power on the highway, maybe with a little room for some low boost (6-8 PSI, small turbo. Supercharger is not even on my mind) with some decent MPGs.

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Cheromaniac
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Re: New 4.2L mini-stroker recipes

Post by Cheromaniac » December 4th, 2018, 11:14 pm

Maaadman3 wrote:
December 4th, 2018, 10:30 am
I've been kind of studying this post the last couple days but haven't really noticed any mention of this being done on a WJ.
Is it still possible in this model?
It's possible on any Jeep model that originally came with a 4.0L I6.
1992 XJ 4.6 Stroker - 5MT - 202rwhp/258rwtq - Sold 13/12/2016 :cry:
Stroker build-up, Stroker "recipes"
2006 Mustang 4.6 GT - 5MT
- 311rwhp/328rwtq - Midlife crisis car :D
Basic bolt-ons

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Re: New 4.2L mini-stroker recipes

Post by Maaadman3 » December 5th, 2018, 9:00 am

Cheromaniac wrote:
December 4th, 2018, 11:14 pm
Maaadman3 wrote:
December 4th, 2018, 10:30 am
I've been kind of studying this post the last couple days but haven't really noticed any mention of this being done on a WJ.
Is it still possible in this model?
It's possible on any Jeep model that originally came with a 4.0L I6.
Is there anything special I'd need to do with the crank being that I have the 42RE trans? I know with the AW4 it would need a bit of modification.

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Cheromaniac
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Re: New 4.2L mini-stroker recipes

Post by Cheromaniac » December 5th, 2018, 1:08 pm

I don't know the answer to that. You'd probably have to put the 232 and 4.0 cranks side by side to see the differences.

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jpradcliffe
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Re: New 4.2L mini-stroker recipes

Post by jpradcliffe » February 18th, 2019, 7:00 pm

Hello all.

Almost done with my stroker here and am wondering:

I have an extra 1999 Cherokee wiring harness and am wondering if it would be worth the pain in the ass if I swap the obd2 into my 92 Comanche? Any performance gain? Also on this 4.2 mini stroker would I gain anything by upgrading to 1:7 rockers, or if I’d just be wasting money. Please advise, thank you!

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Cheromaniac
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Re: New 4.2L mini-stroker recipes

Post by Cheromaniac » February 18th, 2019, 9:51 pm

Unless you've ported the head and upgraded the valve springs, you won't see any benefit from 1.7 ratio rockers on a 68-235-4 cam that already has a generous amount of valve lift.
As for swapping the OBD II wiring harness and ECU into your '92 Comanche, the biggest benefit will be that the ECU can be custom tuned to improve performance, drivability, and fuel economy.

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jpradcliffe
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Re: New 4.2L mini-stroker recipes

Post by jpradcliffe » Yesterday, 6:10 pm

Ok, thank you!

My head is extensively ported and polished so that's exciting.

My real question I guess is that is there enough room, piston to valve clearance wise? My piston are slightly out of the hole and quench is at .030 so basically the head gasket thickness.

Thanks for the reply.

Russ Pottenger
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Re: New 4.2L mini-stroker recipes

Post by Russ Pottenger » Today, 9:24 am

Fortunately piston to valve clearance isn’t a problem with our Jeep engines. That’s one of the reasons why the Pistons don’t come with valve pockets

Along with the 1.7:1, I also stock 1.65:1 ratio’s that Harland Sharp builds for me on a custom basis for the same price as the OEM 1.6:1 ratio and 1.7:1

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