Offshoreonly.com - Engine Quest Head work results

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Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - Engine Quest Head work results (https://www.offshoreonly.com/forums/general-q/335242-engine-quest-head-work-results.html)

mike tkach

03-07-2016 08:25 PM

i am gathering parts for a 509 build.i have a set of the eq 320s on their way to me.also just got some 525 efi cams.going to go with app 9.5 to 1 c/r.i have a nice 850 carb but also have a 1050 dominator to try.joe,if you get a chance can you enter the info on your desktop dyno and see what it sais.i am thinking 600 hp.

ICDEDPPL

03-07-2016 10:12 PM

You gotta love Mike at High Flow! Your intake #`s is better than mine and a smaller head should have more velocity.. I don`t like this at all!!! :D
Can`t wait to see what they dyno at, should be a killer combo.

Mike, these things are not going to install themselves, stop thinking about a 509 and EQ heads:bunnydance:

http://33outlaw.zenfolio.com/img/s1/...49838269-3.jpg

mike tkach

03-07-2016 10:29 PM

starboard short block will be finished by the end of day tomorrow.

ICDEDPPL

03-07-2016 11:42 PM

rockin and rollin!

articfriends

03-08-2016 12:01 AM

I must say pretty good flow numbers! im impressed

Gimme Fuel

03-08-2016 07:01 AM

Quote:

Originally Posted by mike tkach (Post 4412874)

That should be a nice combo! I am interested to see how that dyno's. My next boat engine refresh will be very similar to this plan except possibly efi.

MER Performance

03-08-2016 07:27 AM

I must say; I'm pretty impressed with those numbers.... Alex; told me last week, that was a decent head out of the box....
Cast iron port work, not very fun at all....

MER Performance

03-08-2016 07:30 AM

Quote:

Originally Posted by MILD THUNDER (Post 4412862)

Scott, would there be any reason NOT to back cut an intake valve? Reason I ask, is my old valves did not have a back cut.

He flowed them stock with the tulip ex valve and nail head valve, I forget the difference in flow, wanna say around a 8-10 cfm gain on the exhaust from the tulip ferrea over the manley. That sound about right?

Joe, No back cut....... Laziness.... just imagine someone taking the time to dye the valve and lap it to find the edge, then grind the valve at 30 degrees...

F-2 Speedy

03-08-2016 07:32 AM

Mild, how many hours of port work went into one head ?

MILD THUNDER

03-08-2016 07:48 AM

Quote:

Originally Posted by 33outlawsst (Post 4412989)

Mild, how many hours of port work went into one head ?

Still havent got a total on that.

Also, fwiw, flowed with no pipe on exhaust.

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