500 hp questions
 

How many hours is a 2000 500hp bottom end good for, oil, filter changed every 20 hrs with royal purple syn.

cam specs of a 2000 500 hp

cam specs of a 525

best alumniun heads for the money

thanks guys

I have 400HRS. on mine compression shows good. Everything runs fine. If your oil pressure is good. Do a leak down that really tells the story. A lot depends on how you treat it and how hard you run it. Royal purple helps I also use it in the drives and engine.

like said before, how it was treated/maintained, but if has been the way you say, 700-1000 hours should not be a problem on a good big block bottom end that never goes above 5600...now if you have had carb flooding issues, or ran high oil temps all bets are off...Rob

Cam specs anyone??

specs for 525 EFI cam--Its a Crane cam.

298*/306* @ .004"
236*/244*
.610"/.632" Valve
114* LSA

HP500 carbed specs

284*/292* @ .004"
222*/230* @ .050"
.576"/.598" valve
110* LSA

Thanks griff

If the leak down test is less than 10% on all cylinders could i get away with just redoing my top end and wait a couple years and do a complete refresh. reason im asking is in my 32 active thunder my motors set up high and are real easy to pull heads , cams and so on, witout pulling motors.

thanks

you should be fine...how many hours now ? Rob

430

If you're less than 10% then you could just do head gaskets. I don't think you will be able to get the cams out without pulling the engines or at least lifting them. Pulling the heads in the boat would suck.

Personally, I would just pull the engines even if you only do the top ends. It is much easier than messing around in the bilge and climbing and reaching. It will be less work in the long run.

I did a top end refresh on my 24 Outlaw with the engine in the boat. The entire back seat comes out and there is no bulkhead and it still sucked. Boat got dirty and its real hard on your back bending and twisting.

When I did the Pantera, I had the engine pulled. It was much easier with no sore back and no dirty boat.

Yea when i did the springs in the boat i know what you mean, but if i pull them i will do a complete refresh and be done. thanks

guess what would really make a big diff if you have a way to lift the engines out, without it it's a big pain, I have a slick setup and it's great...but before had to make a trip to a friends shop..who just went out of business so was forced to do my own. I would not pull the heads with out doing a valve job at this point and with those hours you should be fine...Rob

lots of info here that helps me out... looking at a boat with twin 500's (2003) with 345hrs on them this weekend in TX...dealer maintained. Anyone her familiar with any TX dealers in the Houston area??? thanks for the original post rssteiny:ernaehrung004: