Ingredients to make killer 2.0

**Keaten** · 12-16-2017, 08:28 PM

Can someone school me on whats inside a F1 powerboat merc 2.0 powerhead , or maybe HP numbers at 9-11,000 rpm I want to learn as much as i can, block base 2.4 or 2.5, front half,porting numbers , compression ,lossing bottom end doesn't matter to me..

**FMP** · 12-16-2017, 08:32 PM

Someone put up the SST120 specs a while back, maybe they will repost as a start.

**Capt.Insane-o** · 12-16-2017, 08:53 PM

They are a bridgeport block, kind of their own special thing. The one I ran on my Viper came with sheet stating 312 hp at 9200. It had 180 psi. I put a spacer, pcu and cut the heads to 18cc, stock they were 21 cc.

They don't pull as hard as 2.5 but they are a wicked little motor. I run mine at 20:1 with r50 or royal purple and 110 octane. It was tough on reeds until i switched to the coated sport jet blocks. I acquired two more this year and am up to five of them now. Just need a few doo dads to complete the last three.

**FMP** · 12-16-2017, 09:32 PM

That's a wild motor

**Keaten** · 12-16-2017, 09:38 PM

Cool finally some numbers..thanks ok can guy make 250 hp with a fishn mota 2.4 based 2.0 if so wat rpm area does it need to ported for

**Michael J Giesler** · 12-16-2017, 11:44 PM

The only problem is no one is making pistons for them good motors on lite boats

**Capt.Insane-o** · 12-17-2017, 01:03 AM

Dunno why you would want to go through all that. The 2.0 f1 is a full out race motor, They need a lot of compression, high octane fuel, really good oil, lots of rpm to run. If you have a 2.4 block have James Perry put steel mod vp sleeves in it with some tubes and the other neat little stuff he does. Set it up to run on 135-140 psi. It would take a lot of work to try and make a fishing block 2 liter make an honest 250 hp.

**Keaten** · 12-17-2017, 01:21 AM

Ok thats good info im still learning about wats not worth it, and wats realistic thanks ,

**FMP** · 12-17-2017, 08:08 AM

Originally Posted by Michael J Giesler

The only problem is no one is making pistons for them good motors on lite boats

If you sent Wiseco a piston they could make you a dozen?

**Chaz** · 12-17-2017, 08:56 AM

Originally Posted by FMP

If you sent Wiseco a piston they could make you a dozen?

Sure , just as long as you pay for the other twenty four that it takes to fill a minimum custom order ...

**FMP** · 12-17-2017, 09:02 AM

Last I asked not too long ago 12, maybe it's a different situation with these but I'm not sure why?

**Chaz** · 12-17-2017, 09:22 AM

Askin and writing a check jogs two different memory sensors ...

**FMP** · 12-17-2017, 09:42 AM

100% , dozen was the word. No cheque strictly cash.
Actually I had bought 14 and then asked later to find I could have done a custom. If it's a totally new piston then maybe it's different.

**BUZZIN' DOZEN** · 12-17-2017, 09:53 AM

This is going back at least 15 years, but a friend of mine was turning 800cc arctic cat triples into 1108's and he had to order 50 pistons!

**Keaten** · 12-17-2017, 10:12 AM

Would it be smarter to replace the 2.0 sleeves with 2.4 sleeves after booring and change pistions to 2.4 of course would that be automatic +25 -50 hp ? ill be porting anyways and running 5or7 petal front with wh20 carbs