First stroker build

[CDyreng]

Hello I am new to this forumn. I’ve always wanted a jeep stroker and I’m getting close to finally getting to do one. I’m new to building motors. I’m honestly not very knowledgeable about this stuff but I have plenty of people around willing to help me through the work. But I want to learn how to do it on my own. I’m overhauling a 4.0 right now( first time tearing apart a motor). As soon as I’m done with that one I have another 4.0 in my 99 wrangler I plan on doing a stoker kit in. I don’t completely understand the quench gaps or know how high of a compression ratio I want to run. I’m looking for advice on what I should buy for doing this whole thing. For context I live at an elevation of about 5200 feet. Most of my driving will be a this elevation. I will do a decent amount of wheeling up to 10100 feet of elevation. But majority highway driving and around my area. My job involves a lot of driving on canal dirt roads all day. I live in Utah about an hour away from cleggs so I’ve been eyeing down their stage 2 stroker kit to go along with their stage 1.5 cam. I don’t know if this is the right combination for what I’m doing. I’m open to anything. If that can is pretty aggressive I can go lower but I don’t know how to figure out what can I want. I’m open to going more aggressive if it can last a while. I just want a motor that can be reliable and last 50k more miles would be awesome if not more. The jeep currently has 197k miles. If the 9.3 compression ratio means I give up a lot of reliability then I don’t have to run that high. Any advice is greatly appreciated. I see Russ on here has his own products and I am completely open do buying whatever everyone recommends. Thank you in advance

[Cheromaniac]

The Clegg Stage 2 kit with a 9.3:1 compression ratio is a good choice. At your elevation, you could run the engine on catpiss and it wouldn't detonate.

https://www.cleggengine.com/jeep-4-0-st ... -1c-r.html

For your type of dxriving you'll want as much low/medium rpm torque as possible. If you're building a '99 block that has a cam retaining plate instead of the earlier style recessed bolt with thrust pin/spring, your best choice of cam would be the 163-201-5. With 0.45" of valve lift you could reuse the stock valve springs/retainers/keepers. Unless you have a ported head, a higher valve lift won't gain you anything.

https://web.archive.org/web/20250104130 ... shafts.htm

[CDyreng]

That cam looks like it’s been discontinued but the low to mid range profile does sound like what I would want. Is there a different cam still produced that I could use that’s similar. I’d be willing to change my springs to get it to work if I need to. Just don’t want to sacrifice a whole lot of reliability. It would obviously be pretty fun to make more power. The only thing I’m concerned of is I don’t know how to do tuning

[Russ Pottenger]

More than happy to offer some guidance and assistance in putting together a stroker kit for you.

Unfortunately, this time the late model thrust plate style 163 cams are unavailable but I do have an equivalent in the earlier style pin and spring

I offer custom Pistons to help with obtaining the optimal quench along with choices in various dish volumes

Feel free to reach out to Mimis and I’ll help you in any way that I can

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]