engine on the dyno
 

they ll be duin the first pull tommorow cant wait to see how much hp
blueprinted and tweeked hp500efis
expecting 525 to 575


gellner engineering power!!!!! a' la bob russell baby!!!

Re: engine on the dyno
 

525hp at 5300rpm!!!


balanced and blueprinted hp500 efi

Re: engine on the dyno
 

What mods did you do?I am going to do mine this winter :)

Re: engine on the dyno
 

no mods just true blueprint, extreme balance and good parts put together well... after the boats running well up the rev limiter and maybe mod the map for a little more... maybe 10-20 hp... the hp numbers were still climbing stong and he feels 5400rpm is NO problem with his internal build

Re: engine on the dyno
 

oh yeah and w/ the crank balanced torque WAY up too

Re: engine on the dyno
 

Gelner huh? let me know what HP you turn.
I've never had a motor built with out total balance, Thats like checking tolerances, you just do it. :cool:

Re: engine on the dyno
 

You there to watch? I don't know why, but watching a big hp motor on a dyno gives me goose bumps. Especially when the guy says "That one rattled the windows" :D

Re: engine on the dyno
 

tomorrow running engine #2... tbc

Re: engine on the dyno
 

Shah mat,when i watched my 540 on dyno under boost it was hard to imagine it in boat wound out!

Re: engine on the dyno
 

And.........


I get bigger goose bumps when the guy say's "That one rattled the neighborhood's windows 5 miles away" :D :D

Re: engine on the dyno
 

How a bout a dyno sheet . I would like to see the curves please.
]



Rob

Re: engine on the dyno
 

curves? no curves!!! just flat big torque

Re: engine on the dyno
 

ahat rpm was it at and what was peak torque

Re: engine on the dyno
 

need to get the sheets but i think peak tq was 590

does that sound right?

Re: engine on the dyno
 

wow thats great
I had 560 hp at 5500 rpm with peak torque being 580 at 4500 rpm
my motor went ovrer 500 ft-lbs of torque at 3500 rpm and stayed over 500 all the way up

Re: engine on the dyno
 

dont know if we're gonna spin em THAT high!!!
maybe 5400revs for about 535hp i figure w/ my 30p labbed i hope to see 85

Re: engine on the dyno
 

All ya did was rebuild the motors?No mods?

I am going thru mine this fall, up grade cams ,tappets, springs.etc.what all can you do to a 500efi to get more power ,besides the flame arrestor and computer. How much power are the getting out of them??


If there is not much improvement in power with bolt on parts Kinda of thinking about putting blowers on it at the same time.


Rob

Rumor is***
I heard sterling was getting around 750hp on there SBI 500efi motors that are supose to be stock apearing.Stroking the crank ,cam,rasing the cr??

Re: engine on the dyno
 

get brodix heads and youll see 550 easy

Re: engine on the dyno
 

550 not enough.

I see a lot of people using the dart pro ones cnc ported .Still has a small runner and good flow. Just have to get the water jackets coated.

Re: engine on the dyno
 

then just call innovation and get some 650 efis

Re: engine on the dyno
 

took her out today... first time this season... after a good hour of dealing w ODNR at the ramp... get this my stainless steel fire ext. dont count because the clamp around them blocks the uscg approved sticker!!!... so off to the store, well after fiddling w/ things and clamps and hoses were off ( after i convinced the officer i had " inline mufflers" in the exhaust)... man does that torque make a difference accel is AWSOME... tomm ill see if i can do a wot pass and get top speed #s