baja272454

Hey, Can you tell me more about your setup? Drive,prop,steering. What HP produced the 98 mph?

PIT BULL

Ofcourse if you have one or build them to sell you wont agree. But if you build BB chevy day in and out for 30 years. Dynoing them as well as taking them apart years later to freshen them you know a 540 wont make the 30 hp more it should then a 509 and will have more wear if built the same way. Not saying a 540 is junk and ofcourse it will run well but hands down the 502 is a better stroke.
The program used is used by Gale Banks and he swear by it. As far as the guys who agree with me on this, most of them asked me not drop there names. Top notch marine engine builders in NY are in a small circle. Look at Mercruisers 540 bulldog @ 470 pshp. the 500Hp is the same pshp with SLIGHTLY more compression. Why is the 500HP the choice for racing over the 540??? Call Mercruiser and get a good honest tech on the line. See what he says. I rest my case.

dyno

Amen!!!

flat rate

The bulldog was built to stack s**t on top! I have 4@1/4 cranks in my 502's and it is a world of difference. I think you need new heros.

PIT BULL

Heroes?? Flate rate have you any engine building experience ?? No Heroes here, just guys who forgot more then most know about engine building. Dont wory, Just because you got sold on 540s doesnt make you bad. Not as experienced mabye, but not bad. You just could have saved some money and had a more reliable engine. The old nothing clintches cubic inches was cool before the dyno was refined. Especially for marine use where hp,torque and rpm are more critical.Correct me if IM wrong but I dont even think Mercruiser even builds a 540 anymore??? Gee I wonder why. Ask them, They gave me an ear full on this matter.

"Built to stack s*** on top??? Mercruiser builds engines as finished packages, Why would they put the same carb and intale from the 500 hp on it. To have you replace it with a blower???????

TylerCrockett

[QUOTE=PIT BULL;2425363]
Top notch marine engine builders in NY are in a small circle jerk.

I thought JC was the only Marine engine builder in New York

PIT BULL

I havent been on this sight in a while and dont know your candor.
Either you are real stupid or real funny. If your stupid I guess 540s are one of your best sellers. I post remarks stating a case and all a big shot like yourself can do is talk **** about NY engine builders. I would at least figure an "expert" like yourself would have an explanation. If your funny? haha.

TxHawk

Are we building engines to last 1000 hrs in a Sea Ray express or are we wanting to go fast? I would rather rebuild at 200 hrs then give up some power!! To each his own, good luck with your 502's.

Fountain38SC

For a guy with 24 post you sure know how to make friends. I really don't care what you buy. I have only related my experience. My 509's weren't anything compared to my 540's. I would never go back. But to each his own. Best of luck.

PIT BULL

Thanks, My point is efficiency. If the extra friction of the longer stroke is holding it back from being as productive as it should, Why use it? Why not go to a tall deck 557?? And even a dud 540 built properly will last more then 200 hrs with proper maintenance. IM not saying to junk your 540. Just if your deciding to stroke your 502 for under 5500 rpm usage stick with what you have.