4.6L Questions

[IsaacN97]

New to the forum, as well as strokers. I recently bought a 2000 xj and found the 0331 head to be bad so I bought a reman tupy. Ive also decided to just pull the engine and rebuild it as this is a project for me it never ran all that well to begin with. Upon teardown I found the engine to be bored .030 over with a 4.2 crank and rods and .030 over 4.0l pistons with a comp 68-2 31-4 cam. I want to keep the stroker going and re use the cam and crank. My questions are; Can I use the TUPY head? Also I want to get a set of rods that have the bushing and a set of pistons that will work with that. Really just need a sense of direction and what else I need to do to refresh this engine. Looking forward to some feedback!

[Cheromaniac]

1. Yes, you can use the TUPY head.

2. I suggest you contact Russ for a set of 4.0L rods & custom pistons. Then you can set the proper deck clearance and set the piston dish volume for a 9.6:1 compression ratio.

[amcinstaller]

One thing I'd check is have the crank and at least one piston in, and check the deck height to see if it's been milled already

[IsaacN97]

1. Yes, you can use the TUPY head.

2. I suggest you contact Russ for a set of 4.0L rods & custom pistons. Then you can set the proper deck clearance and set the piston dish volume for a 9.6:1 compression ratio.

Awesome. I’ve tried contacting him through email a couple weeks ago, still haven’t heard anything though. I’d love to go his route over the scat rods and Kb944 as I’ve heard multiple different opinions on those.

[Cheromaniac]

You can send him a PM on this site.

[Russ Pottenger]

My apologies.

Sometimes my emails go to spam and I don’t catch them

Please give it another shot or feel free to shoot me a call

Thanks,
Russ Pottenger
Bishop-Buehl Racing Engines
Cell (626) 673-2203
Email: [email protected]