Anyone have a 2.3? or a Slowboy Head?

[my98gsx]

I have a 98 GSX that i just spun a rob bearing in and now since its the winter time im doing a complete engine overhaul. I was looking into an Eagle Stroker kit. I have heard some really good things about added tourque and power from the kit, not to meantion the NEW crank, rods, and pistons. BUT... i havnt talked to anyone that actually has a 2.3... If anyone is using one please let me know how you like/dislike the kit, and was it worth the money? My other question is regarding a SlowBoy stage VI head.... They recomened it for my application, but again i would like to get some feedback from other DSM drivers that have them on their car. Thanks.

 

[absolute_DSM]

Im building a stroker because of the added figures I have heard. Its not any more work than a regular build besides some clearancing. You just have to decide what you want out of the motor. Drag, street, road course, etc.

Also decide if you are building it yourself or if a shop is gonna do your car/tuning for you.

 

[andymoraitis]

I went through something similar last March and decided to go the same way. I have the stage II Slowboy setup (good for 600WHP) which included a remanufactured 4G64 crank, Wiseco 8.8:1 pistons and Manley H-Beam rods. I've been very happy with the performance of the motor despite the fact that I've yet so see improved spool from my setup. Then again, this isn't something the kit caused.

Torque is much greater than in the 2.0 and on the right turbo, the motor is very strong. I'd recommend nothing smaller than a 50 trim for this kind of setup. I run mine on a stock head, stock intake and stock throttle body, but I do have Comp 200's with the intake cam advanced close to 5 degrees. Off boost driving is much better and you don't need to get into the boost to get the car moving although it's very fun to do so. I've never run a performance head but I would consider one since the stroker is an air hungry motor. Anything you can do to optimize flow will greatly enhance power.

The only thing you need to be aware of when ordering your kit is what kind of thust bearing the motor uses. Slowboy ships their 2G kits with flanged bearings (the earlier design) and if you have a late 98 model year, Mitsu used a revised split thrust bearing that's less prone to crank walk. When you have the block disassembled, it would be a good idea to have the machine shop check what kind of thrust bearing came in the car. If SBR doesn't have the split thrust available, you can usually find them from JAM (Jackson Auto Machine).

Other than that, I would recommend that you use a tuning solution that allows you to lower your timing. Higher compression motors will naturally have a tendency to knock more on pump gas and the stock 2G timing map will be a bit aggressive. I'd recommend something like DSM Link to tune with or a custom Keydiver chip with the timing capped. How much boost you can run will be somewhat limited by what turbo you choose and how efficient it is on pump gas. Remember, anything smaller than a 50 trim will have problems holding full boost to red line (which is now 7000-7200 RPM).

Hope that helps,

Andy