We are getting side tracked as always happens on this board as soon as somone starts an oil discussion.

back to original topic, 20psi @ 3100 is to low especially if its not after a hard WOT run, get the engine builder invloved, at least ask him what he wants you to try.

different oils will deal tmps differently....do you have an increased oil tpm??? you need that gauge! my guess is you are well into the 200 deg. (PLUS) range... and you have not been past 3800!!...you may have some major issues my friend??? it's all about the DATA.


PS....from the SAE:........

"Oils that fall into a certain range are designated 5, 10, 20, 30, 40, 50 by the S.A.E. The W means the oil meets specifications for viscosity at 0 F and is therefore suitable for Winter use."

remember i just work here!

lets talk about Viscosity Index shall we???....not!...go get oil tmp gagues dude

Jason, Check the bottom bushing in the distributors. My 502 ran ok but it was so shot there should have been a problem. Second undo those wire ties!! use wire separators. I've fixed 3 motors that had the wires bundled and thats all it took! Hopefully thats all the problem you have. greg

oops...almost forgot...never use syn's to B/I an engine...should use multi's for B/I...

ps...for the record i have done engine oil testing with different water volumes...now there!:D ...top that LOL

remember...i get paid to break other people ****...oops i mean test:rolleyes:

yes different oils will deal tmps differently but imo engine is not dropping to 20 psi under a light load 3100rpm with light pitch 21P props because of the oil weight/brand. 5W30 quickie mart brand oil should give 40psi under these conditions l unless its gettin too hot. Knowing the Temp would be a very good thing but I would be getting builder in loop so he doesn't say sorry you broke it your proband checking for some of the major things like detonation , lean 1st before I experimented a lot getting it hot trying different things


PS and ... Yes the W stands for suitable for Winter use but the specification is the viscousity at two particular temperatures , has nada to do with the season, the fact that it has the viscousity of a light oil, 5W, at low temps is what makes it suitable. The 20W50 Oil does not look at the calander and say gee its winter I will be a 20 Weight today it is simply a 20 weight oil at 100 degrees and does not thin to more than a 50 weight oil at 200 degrees thats the spec ,,, also From the SAE

"for the record i have done engine oil testing with different water volumes"

What was the PSI at 3100 for 10% 20% 30% water etc :D:D:D

dude...don't get me started...:eek: ...i didn't want to get involved in explaining the #'s...just "W" stood for winter and not weight...notice it's SAE 50 and not 50W??

actually you would be VERY surprised at some of this testing...U KNOW the windage was low!LOL

OKay spoke to engine builder
He wants to first put a mechanical oil pressure gauge on the engine to see if that reading on the dash is correct or not.
I also told him about the carb and he wants to set the carbs up via Vacuume gauge
I said there is no vacuume on it, he said rochester, I said yeah, he said we will get it, there is vacuume on it.
I said OKAY
Your the boss
Ill watch hows that?
I did not get mad or anything I just figured at this point, these little quirky problems he can deal with, customer service,
I was pleased though yesterday at how it ran, she ran nice, even (besides when I got airborne one time from a damn yacht wake doing about 35-40 MPH LOL)
came down smooth though
ripped throttles back real fast too, did not want to over rev it or bust a prop shaft on reentry
she tracked a little off (Tie bar adjustment I believe)
All in all im a happy camper and so is the wife
Jason

Jason what way did you run on the river north or south, I thing I saw you on sunday, just north of Tacony/pal bridge, if it was you I sounds sweet.
Tom (MissMyMoney)

I went south from Neshaminy
Drove down to Dave and Busters
Ate lunch at Kat Man Du
then came back north to Neshaminy and back on trailer and went home.
I made a 1.10 meg wav file if anyone wants it?
Also made a 40 meg movie of me getting it off the trailer
Damn I need to build a web server LOL
Tom, what were you in?
Boat is a 280 baja sport with hooker barbie pink and gray stripe down the side
boat has a white arch
4 of us on board yesterday
Jason