exciting re-engine project.....

Firefly625

Firefly625

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Well in for a penny, in for a pound. Just wondering if I can get Volvopaul to fit this under the wheelhouse floor...

http://www.ebay.co.uk/itm/SEATEK-Na...at_Engines_EngineParts_SM&hash=item35d2a1f089

$_12.JPG
 
Having been on a boat powered by these ( 3 of them actually) when one let go, the noise was excruciating I can vouch for the power to weight ratio :-) though.
 
FARSCO said:
Hi LS1

Why does it need a rebuild at such low hours. Is it tuned to within an inch of it life. MOD love spending our pennies obviously!!!
Click to expand...

Been around a good few years now but once the only kid on the block with gasoline like power density....900 hp out of less than 800 kg.

Many versions direct cooled taking its toll on manifolds heat exchangers etc.
Bearings very skinny for 10.3 liter engine designed for light compact installation package and low friction losses, not long life.
Turbo-machinery operates at 3 bar and is hugely expensive due to being bespoke unit, anecdotal stuff but replacement turbo circa 4k.
Exhaust valves take a hammering, have seen a Seatek cylinder head from Sunseeker with significant valve beat in.

Add to all the above the fact that this motor is built in penny numbers which leads to simply breathtaking parts prices.

Target market is military forces around the globe as engines have minimal emissions compliance, in addition to engines built for power boat racing none of it requiring significant expenditure on emissions R&D.

In defence of MOD scuse the pun, no other kid on the block used to come close in terms of power density however commercial units creeping up.
 
Oops

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MYStargazer said:
I'm sure you could get this Hp from a Cummins 5.9, Paul?! Suppose the problems arise in keeping it cool...
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I ran a pair of Cummins QSB 5.9 425's in RB2008 at a wee bit over 1,000 hp @ 3,400 rpm and engines just about coped with lube oil temperature. Did so well that we tried just a wee bit more than 1,200 hp @ 3,400 rpm ows yer father department, all went to heck in a hang basket and what a mess, split block right along line of main bearing saddle, ho hum at least I know where the fuse is!

6.7 is stronger block, however not been let loose on one of those yet.......I wonder why?

Drat always seem to duplicate images.
 
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Latestarter1 said:
View attachment 41183View attachment 41183
I ran a pair of Cummins QSB 5.9 425's in RB2008 at a wee bit over 1,000 hp @ 3,400 rpm and engines just about coped with lube oil temperature. Did so well that we tried just a wee bit more than 1,200 hp @ 3,400 rpm ows yer father department, all went to heck in a hang basket and what a mess, split block right along line of main bearing saddle, ho hum at least I know where the fuse is!

6.7 is stronger block, however not been let loose on one of those yet.......I wonder why?

Drat always seem to duplicate images.
Click to expand...

Makes you wonder why they bothered reinventing the wheel with that Seatec engine...
 
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