2.5 200 F Block

[Cblyzes]

Recently bought a v-king that has a 2.5l 200 F engine on it. I used to mess with some 2.4l stuff back in the day and cant find any info on the F mota. Is it a good platform to start with? How does it compare to the FF? I am wanting to get some more power out of it. Any help would be appreciated.

[LakeFever]

IIRC the single F is the 1991 7 petal steel sleeve mota. One year only model. Regardless any 2.5L 200 is a fantastic platform and more favorable than the 2.4 stuff

[25two.stroke]

https://www.screamandfly.com/showthr...block-id/page3
Read through all pages of that. I don't believe that the singe F stamp is only a 200 7 petal like the famed diagram shows.
I have seen multiple F blocks that are factory unmolested and 5 petal front. Particularly in the 2000s and newer. The F/FF/EE are always 200hp blocks which are a good platform to start with.

[Cblyzes]

It is a 91 model. The heads look different than all of the other 2.5 that I have seen. I had a finger ported 2.4 that I had 6 2 bbl carbs on that ran pretty good. Stiil have the intake for the 6 deuces just was trying to see what the deal was for the motor I have. It runs pretty good on boat. I have seen 86 with 26 chopper out of it but need to get some stuff tightened up before i just hold it to the floor. Thought about maybe a Nik 245 if I can find one for a base and port from there. Appreciate the input.

[25two.stroke]

If its 91 then its a 7 petal. Good motor for light hull imo.

[tunnelmike]

I've had both on the same hull. I would start with the FF if I had a choice. It would cost plenty to make the exhaust chest of the F look and perform like the FF. Mike

[LakeFever]

Does the F share the same chest as the EE?

[Baker343]

Yes, the F and EE are the same chest cut. And the 91 F had bottom guided rods.
Freshen it up and run it.

[Baker343]

I believe stock heads back in 91 were 40 or 42cc heads.
Throw some new rings, reeds and 36cc heads and let her rip

[gmorgan]

That block can be modified to turn 11,000 rpms on an Allison Drag boat. So whatever you want, it’s there for the taking.

[Mrzip]

Cblyzes.. What Kind Hull You Running ?

[Cblyzes]

Its on a vking yt

[AlanButts]

It is a 91 model. The heads look different than all of the other 2.5 that I have seen. I had a finger ported 2.4 that I had 6 2 bbl carbs on that ran pretty good. Stiil have the intake for the 6 deuces just was trying to see what the deal was for the motor I have. It runs pretty good on boat. I have seen 86 with 26 chopper out of it but need to get some stuff tightened up before i just hold it to the floor. Thought about maybe a Nik 245 if I can find one for a base and port from there. Appreciate the input.

Not absolutely sure this is correct