Encountering Technical problem with 200HP 2.5 Ltr..

[crownfibreglass]

..

A problem i am encountering .. I have a 2.5 Ltr 200 HP 1998 EFI ...
with shaved heads 34cc .average compression is now 136 psi for the 6 pistons
Dual Stage Carbon Reed valves
and with brucato svs plus ACU adjustable unit as well
Last thing is it got a BOBS TUNer and Exhaust releiver from BOBs as well..
and Alien Cowling

This combination did not do any damage anywhere in the outboard..


Last week i decided to take off the EFI system and install Carbs instead ...

What happened was that the noise of the outboard was heard even louder than that with EFI... but it did not last long that the GASKETS between the Block and Mid Section was blown off..

we changed with New Gaskets and went testing again NOW what happened was that the Exhaust TUNER from BOB broke .. and fell low in the mid section

Am i rite saying that with the CARBS the engine made made power ...)) ???
and could be that the gas temerature now is too High to handle for the BOBS Tuner ???

and that is the reason why we are breaking down ???

Please note FUEL used at 97 octane ...

What could we do ???

Is it worth changing the midsection from the original 2.5 Ltr to the 2.0 Ltr XR2 one.???

Any ideas will help

Thanks

SHADOW21 :rolleyes::(:(

[pointer]

Not enough detail to tell for sure, but I suspect with the carbs your air \ fuel mix is off, your running lean and hot.
I wouldn't run it until you know for sure.
What do the plugs look like?

pointer

[bep078]

Throw it in the fliegu Zumminu! HAHA