2.4 200 build question?

[peedeerooster]

Guys, I have a 2.4 200 that I am building for my son. Let me say first, I understand all the don't do it, get a 2.5 logic. But he doesn't need that much power on the vking, he can't drive it much past 80 or so anyway and I already have the 2.4 that needs 2 sleeves anyway. So, that is what I am building for him. I have a question about the pistons and the 4 chrome holes and 2 steel sleeves that the block needs. I want the motor to be able to reliably turn up to 7500 max which means for reliability, I am going to get them top pinned. What I wanted to know about was which piston do I use for that rpm, cast or forged and what kind of clearance I need in the chrome versus steel bores with the best piston? I appreciate any and all inputs except for the get a 2.5 thing. Thanks

[T-REX]

If U gunna have them top pinn'd, go with the wiesco's...give the steel sleeves .009" clearance...don't worry bout tha chrome, it'z big enuff, and U kan't do nutt'in about it anyway...JUSS MAKE SURE THE RINGS GIT IN THE RITE CYLS!!!...That iz the most offen death to a multi sleeve 2.4....

If U wrap sum schotch brite around a rigid hone, and hone the steel cyls(after normal hone'in), it will slick the steel cyl's and the mota will turn like a cherry chrome bore...and it won't hurt the ring seel, actually makes it better, and will slow rind wear...

After he spanks a few 2.5's wit dat 2fo he will like it even mo!!!:thumbsup:

[peedeerooster]

Thanks TREX. I am the one that PM'd you today about the same mota. I now am planning on building it myself since your are wrapped up. I just want to build it right so it can relaibly turn in the low 7K range and not grenade a piston or lose a locating pin. That's all I am mainly after in the build plus port it like the Cherry2fo. Thanks again

[peedeerooster]

I almost forgot. Gonna smooth the exhaust chest a little and put a cross drilled 5 peddle intake from a 2.4 Mod VP and get a set of WH22's. Should be a fun little mota for him. Might need to contact you lata on jetting recommendations. Thanks

[T-REX]

I would suggest putt'in a stock, undrill'd manifold first...break it in, git a base line, THEN jet up .008", and try the Xdrill'd manifold....U may verywell find the stock manifold to be better for allround river use...I juss happen to run a stock 5 peddle manifold on my F-1:thumbsup:

[Jay Smith]

Wizard will offer forged racing pistons for your 2.4 engine within 2 - 3 weeks,
they are top pinned , dual ringed , and Racecote coated.. They are the same quality and race proven durability the 2.5 engines have been using successfully for several years.

Jay @ JSRE 1 281 576 5088 cst

[hsbob]

remove the oil injection and be sure to use steel bearing carriers on the cranks bearings.

[peedeerooster]

Jay, got any idea yet what the cost of the new wizards will be a peice? Just wondering since I have not got a clue what pistons cost anyway. I haven't done any rebuilds period since the mid 90's, that's why I asked. Just trying to get a ball park figure of what the total build might be. Thanks

[peedeerooster]

TREX, the manifoid came from a 1990 2.4 carbed BP I had that I bought new back in the day. Of course those carbs had baffle plates and slosh tubes. I know it was factory jetted, but on that motor it had good manners.

[Cobra1racer]

T-REX = Master of the Merc. Thast a period right there.

[peedeerooster]

I have no doubts about what TREX knows. He is the man on a 2.4, especially a carb mota. Hats off to TREX. I asked him first if he could do the work for me, but he is very busy right now. Understandable being it's slap dab in the middle of boating season. But, I did try that option first just in case he could get to it.

[Cobra1racer]

Yes and he sho duz tipe fun e. Doe't he.