I hear ya, it's all good. My definition of reliable is 250 hrs on rebuild for a blower motor and 500 hrs NA'ed (valves/springs @ 250 hrs). I guess it also depends what blower you're running whether it be roots, centrifical or whipple etc. The roots make a lot of heat and will shorten lifespan and be more prone to detonation. I hear the new whipple is making some serious HP on the 525hp.
Thread: How much power?
Results 41 to 53 of 53
-
- Join Date
- Oct 2008
- Posts
- 3,107
12-15-2008 10:34 PM
-
12-16-2008 12:10 AM
any dyno sheet should show that at 5650 rpm the hp and torque cross on the sheet if they dont they dyno's info are bogus and the fuel is at 100 oct with torco leaded booster at that mix
-
-
12-16-2008 03:33 AM
(Torque x Engine speed) / 5,252 = Horsepower
-
12-16-2008 08:49 AM
I had built about 5 race boats back in the "A" and "B" class days also. 510 cu.in , 9.5:1 compression, iron heads, single carb. wetsump oiling, 15.5 inch primary header tube length, and we made 810 horsepower @ 7000 rpm. The engine would run 7000 rpm all year long and never come out of the boat till after 14 races before freshen!
-
12-16-2008 08:57 AM
Very impressive.
-
-
- Join Date
- Oct 2008
- Posts
- 3,107
12-16-2008 10:16 AM
Very cool!!!
I bet these 598's can make much more than the 800hp they currently do!!! http://www.seriousoffshore.com/forum...p?t=327&page=2
-
12-16-2008 08:51 PM
Some of the boats I am referencing to are the ex powerboat mag Larry Smith Scarab " Let It Roll", "Feel The Rush", "Traffic Light", and "Rum Runners" to name a few. I loved the classes!!
-
-
12-18-2008 03:31 AM
i no oct does not have anything to do with it i was answering his other question but you are right on the curve i stand corrected
-
01-28-2009 01:09 AM
DEANS been putting together a 572 intercooled 1071 hope to see 1050hp and in the fall take my 670hp motor 509 and make it more like 750hp with his custom= cam/intake/ and I have the carb from him.its my p5 motor hope to get back into some racing after my knee heals and insurance says I can play. so this summer I want to break a 100 or the other leg trying. those A class motors ran nice in those boats wish I meet you back in 95 when I started messing with my 502 merc.Dean helped the guy with a twin motor to mine that had troubles with his cam and other stuff and it ran good last fall so mike should put some hours on his 572 this summer .I just wished last year that he sent it to you Dean to inspect.Can wait for mine getting the bug.haa hah.
-
01-28-2009 01:24 AM