point me to the working recipes

Newbies, and basic Stroker Recipes... Get started with your first stroker here!!
TJBUD
Where's the "any" key?
Where's the "any" key?
Posts: 27
Joined: April 20th, 2022, 9:32 am
Stroker Displacement: 4.7
Vehicle Year: 1998
Vehicle Make: Jeep
Vehicle Model: TJ

Re: point me to the working recipes

Post by TJBUD »

Ande1879,
I wasn’t recommending either, just pointing out there’s 2 choices:
1) 4.0 block, 4.2L crank, 4.2L rods, 4.0 pistons with stock compression height
2) 4.0 block, 4.2L crank, 4.0L rods, off the shelf(KB424C, IC944) or custom (Russ P) pistons with 4.0 bore and shorter compression height.

Both choices have pros and cons. I chose option 2 with a 98 4.0 block, Scat 4.2L crank, Scat 6.125” (4.0L) rods, custom short compression height 4.0 pistons.

TJBUD
User avatar
Cheromaniac
I live here
I live here
Posts: 3180
Joined: March 8th, 2008, 12:58 pm
Stroker Displacement: 4563cc
Vehicle Year: 1992
Vehicle Make: Jeep
Vehicle Model: Cherokee
Location: Cyprus
Contact:

Re: point me to the working recipes

Post by Cheromaniac »

ande1879 wrote: March 5th, 2023, 6:22 am That’s the route I believe I am going is 4.0 rods. I just haven’t nailed down what pistons yet? I’m open to suggestions. And I definitely want to do what is needed to keep compression low enough to run 89 octane
I suggest you opt for a set of Russ' custom pistons. They come with a compression height of 1.385" and, when combined with the 4.0L rods, the piston crowns will be 0.005" above the deck so you won't need to have the block milled, thus saving you that cost. The quench height will be 0.038" when a 0.043" thick head gasket is used.

Russ also stocks a modified version of the CompCams 68-232-4 cam with a lower valve lift that allows you to retain the stock valve springs.
1992 XJ 4.6 I6 - 5MT - Stroker build-up, Stroker "recipes" Sold
1995 Mustang GT - 4AT - Modded Sold
2006 Mustang GT - 5MT - Modded Midlife Crisis Car :mrgreen:
ande1879
Noob
Noob
Posts: 10
Joined: March 2nd, 2023, 11:49 am
Vehicle Year: 1999
Vehicle Make: jeep
Vehicle Model: wrangler

Re: point me to the working recipes

Post by ande1879 »

Does anyone have a reason that the KB424C pistons don’t works well? Using them with the 4.0 rods and decking the block .010. I noticed that’s what clegg sells in their kit. Keep in mind I’m not planning adding a turbo. Thanks
TJBUD
Where's the "any" key?
Where's the "any" key?
Posts: 27
Joined: April 20th, 2022, 9:32 am
Stroker Displacement: 4.7
Vehicle Year: 1998
Vehicle Make: Jeep
Vehicle Model: TJ

Re: point me to the working recipes

Post by TJBUD »

Here’s a thread on KB424C
TJBUD
Where's the "any" key?
Where's the "any" key?
Posts: 27
Joined: April 20th, 2022, 9:32 am
Stroker Displacement: 4.7
Vehicle Year: 1998
Vehicle Make: Jeep
Vehicle Model: TJ

Re: point me to the working recipes

Post by TJBUD »

Pasted this time
viewtopic.php?t=6252
Brianj5600
I think I'll order a "tab"
I think I'll order a "tab"
Posts: 43
Joined: August 23rd, 2019, 10:49 am
Stroker Displacement: 4.7
Vehicle Year: 2004
Vehicle Make: Jeep
Vehicle Model: Wrangler

Re: point me to the working recipes

Post by Brianj5600 »

Can stock 4.0 rods be bushed? Estimated cost?
Russ Pottenger
Strong Poster
Strong Poster
Posts: 889
Joined: August 15th, 2009, 1:27 am
Stroker Displacement: 4.7
Vehicle Year: 2000
Vehicle Make: Jeep
Vehicle Model: Cherokee

Re: point me to the working recipes

Post by Russ Pottenger »

Brianj5600 wrote: March 6th, 2023, 9:21 pm Can stock 4.0 rods be bushed? Estimated cost?
I don’t think it’s really cost-effective to bush a stock set of cast 4.0 6.125 rods

By the time you pay your machine shop to press your old pistons off, resize your rods with a set of replacement 11/32 ARP rod bolts, check the end to end balance, and then pay them to reinstall your new set of pistons you’ll easily be within $75.00 to $80.00 of my bushed steel rods.
Another design upgrade to my rod is that unlike the stock rod that locates its cap by the neural on the rod bolt, my rod caps are located by pair of stainless dowels held together by a set of ARP 8740 3/8 cap screw rod bolts.
Currently the cost of my rods are $388.00 a set.

Regarding my Pistons I sell/stock both .030/4.6 and .060/4.7 pistons with a 12cc dish to a 28cc dish in 2cc Increments making it much easier to target an exact static compression ratio. With the compression height of 1.385 this gives you a choice for budget considerations not having to go through the expense of surfacing the deck of the block in order to maintain a tight quench.

Keep in mind that virtually all of the other piston options require the block to be decked approximately .030. If you go with the short rod stock 4.0 piston route you’ll be stuck with a high static compression ratio and poor quench.

Welcome to reach out to me and I’ll be happy to forward you more detailed information and pricing.

Thanks,
Russ Pottenger
Bishop-Buehl Racing Engines
531 N. Lyall Avenue
West Covina, California 91790
Work (626) 967-1000
Cell (626) 673-2203
Email: [email protected]
ande1879
Noob
Noob
Posts: 10
Joined: March 2nd, 2023, 11:49 am
Vehicle Year: 1999
Vehicle Make: jeep
Vehicle Model: wrangler

Re: point me to the working recipes

Post by ande1879 »

What’s your alls opinion on cam selection CompCams 68-232-4 vs 68-235-4. And if I go with the 235 what valve springs? Russ I heard somewhere you have a custom grind 232?
Post Reply

Who is online

Users browsing this forum: Bing [Bot], Google [Bot] and 12 guests