Penta engines. Anyone ever turbo one?

[fredsanford740t]

So, gimmie all that you know about penta engines (real volvo engines not the chevy 350 crap) Are the blocks the same, can you put a 530/531 head on? I need details, please. Thanks all!

edit: seeing as how there would not be much load on the engine, the turbo may not spool, huh?

[fredsanford740t]

<!-- / icon and title --><!-- message -->So, gimmie all that you know about penta engines (real volvo engines not the chevy 350 crap) Are the blocks the same, can you put a 530/531 head on? I need details, please. Thanks all!

edit: seeing as how there would not be much load on the engine, the turbo may not spool, huh?

[Chris_R]

A lot of people use the 531 heads off the penta motors. Of course the #4 exhaust (IIRC) port is usually thrashed from water.

Need more load? Use a bigger prop!

[MrBill]

the good (penta 151) motors I know come already with the goodies like the 2.5 crank, k-cam, and a 531 head.
I would be hesitant to turbo one out of of boat without a rebuild only because there are been some nasty pics of corroded parts from all the water. Man if I had a boat first thing i'd do is make myself an internal cooling system...
I think it would spool just fine, i mean waterskiing might not be as easy because it would take a bit to get going with a big turbo, but it would be a hilarous thing to hear a turbo spool and to fly buy a boat with a small block in it

[fredsanford740t]

yeah this project will be for a guy that i work with. he is planning on getting a penta boat in a few weeks that needs some work and he fears that it wont be fast enough. I suggested putting a turbo on. I think i'm going to give him my mitsu td04h turbo... it may be small enough to spool quickly. what do you think? also i thought that these motors were internaly cooled. my buddy says that he spotted a radiator inboard.

[500dollar744ti]

<!-- / icon and title --><!-- message -->So, gimmie all that you know about penta engines (real volvo engines not the chevy 350 crap) Are the blocks the same, can you put a 530/531 head on? I need details, please. Thanks all!

edit: seeing as how there would not be much load on the engine, the turbo may not spool, huh?


my cousin has this done with his 2.3 penta... simple setup, stock t3, custom marine turbo manifold, fuel injection with megasquirt... the results are great, you can run a bigger prop and get way more top end...

at the beginning i remember telling him that he had some balls to megasquirt his boat, but he did it... although FTW he keeps a ghetto rigged carb setup on board which he had to use once

[impulse922]

the good (penta 151) motors I know come already with the goodies like the 2.5 crank, k-cam, and a 531 head.
I would be hesitant to turbo one out of of boat without a rebuild only because there are been some nasty pics of corroded parts from all the water. Man if I had a boat first thing i'd do is make myself an internal cooling system...


from what i've heard, all pentas have closed loop cooling system, what kills the number 4 exhaust port is when people leave them in the water without the engine on and the water travels up the exhaust

[fredsanford740t]

right on.