Synthetic oil in J series V6 engines.

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I would say the "problem" was the 7psi of oil pressure, dear Lord, we consider "worn out" when it gets below 20 in the SBF world. Last 302 I had a hand in taking apart had 12, and it had no bearings left.
 
That's interesting. That Ford had the same oil pressure with no bearings that my Buick did from the factory though I guess that's what happens when you install a turbo feed with no pump upgrades. I'm used to seeing 10psi hot idle on a fresh engine with it dipping to 2-5psi when really worked.
 
Originally Posted By: BuickGN
That's interesting. That Ford had the same oil pressure with no bearings that my Buick did from the factory though I guess that's what happens when you install a turbo feed with no pump upgrades. I'm used to seeing 10psi hot idle on a fresh engine with it dipping to 2-5psi when really worked.


WOW!! Dude, my 330,000 "beat to death" engine has 38psi hot at idle with 5w30 in it
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Originally Posted By: Dieselbob
God knows I love Buicks, but they may have the WORST stock oiling system ever devised. V6, V8, they both suck!


X2!
 
to other guy. let me correct myself. ppl who into doing something with their J series engines, not 4 bangers who have HUGEEEEEE aftermarket support. us J series guys barely have anything, so somebody has to make custom stuff

Originally Posted By: bepperb
Car is definitely specd 5-20.

I assume the difference between M1 and the Castrol probably has more to do with the viscosity of the two than the syn/dino.

I'm surprised that a solution to the "problem" of 7psi hot idle isn't either a thicker 20 weight syn, or a 30 weight syn.

No matter what, you can't try one synthetic oil in one engine, not like the results, and then preach that for an entire engine family all synthetic oils are no good.

Who is this Paul guy. It's a boring day at work, I'm all for reading a little more about J-series mods, and ready to learn something new.



for some reason v6performance.net is down
not sure if you can read this without have to log in
http://elitecm.net/forums/viewtopic.php?f=18&t=1249
http://elitecm.net/forums/viewtopic.php?f=18&t=364
http://elitecm.net/forums/viewtopic.php?f=18&t=40
 
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He says "a built J35". The oil pump might have been replaced with a high volume pump. At an idle the pressure would be lower, but rev the engine and it climbs. I'd trade volume at an idle over pressure.
 
I know who the guy is now and I think he was taken a little out of context.

From what I gather he's seen more wear on both stock and built J32s with the 20wts. After building many of these he only runs a 30wt in his. He states oil pressure is too low on a 20wt for his tastes and I agree, 7psi is pushing the low limit.

Read the last line in the first post in the first quote. He states that he also used a 20wt dino too. I think most people missed that because they saw the first few sentences and started flaming away.

I hope to get him over here, I would love to hear more info from a guy that has been into hundreds of these engines. IMO, I put more value into his teardown results than a UOA to determine the best viscosity of these popular Honda engines.
 
Originally Posted By: BuickGN
I know who the guy is now and I think he was taken a little out of context.

From what I gather he's seen more wear on both stock and built J32s with the 20wts. After building many of these he only runs a 30wt in his. He states oil pressure is too low on a 20wt for his tastes and I agree, 7psi is pushing the low limit.

Read the last line in the first post in the first quote. He states that he also used a 20wt dino too. I think most people missed that because they saw the first few sentences and started flaming away.

I hope to get him over here, I would love to hear more info from a guy that has been into hundreds of these engines. IMO, I put more value into his teardown results than a UOA to determine the best viscosity of these popular Honda engines.




THANK YOU for support. hate when ppl flame somebody and they dont know what they talking about.
 
Originally Posted By: BuickGN
Read the last line in the first post in the first quote. He states that he also used a 20wt dino too. I think most people missed that because they saw the first few sentences and started flaming away.

I saw that. Two things in response:

- No 5w-20 is fully dino. It has to have some synthetic component to keep volatility down.

- Castrol GTX 5w-20 is slightly thicker at 100 C than Mobil 1 5w-20.

The fact remains that he is still making a blanket statement based on only three oils, and on top of that they aren't even good samples for what he's trying to demonstrate.

This isn't to say he's stupid, of course. He could be a totally competent engine builder and still make this kind of mistake. I work with scientists for whom this aspect of experimental design is at the core of their livelihoods, and they still do it from time to time. It's why you always have to look at things with a skeptical eye.


Originally Posted By: BuickGN
I hope to get him over here, I would love to hear more info from a guy that has been into hundreds of these engines. IMO, I put more value into his teardown results than a UOA to determine the best viscosity of these popular Honda engines.

Agreed.
 
I would go with 5w30. Regardless of 5w20 causing more wear in the engine or not, even the slightiest increase in wear with 5w20 is meaningless looking at the bigger scheme of things/picture of longevity.
 
Originally Posted By: AV6NHBP6SPD
so which oil should i get for PA climate? thinking either 5w30 or 10w30? im using 0w30 now

Depends what oils you are looking at.
wink.gif
 
Originally Posted By: d00df00d
Originally Posted By: AV6NHBP6SPD
so which oil should i get for PA climate? thinking either 5w30 or 10w30? im using 0w30 now

Depends what oils you are looking at.
wink.gif



Agreed.

If you choose Redline, easy choice, 5w30. Even the 5w-20 Redline is more robust than most 30wts.
 
Originally Posted By: BuickGN
Originally Posted By: d00df00d
Originally Posted By: AV6NHBP6SPD
so which oil should i get for PA climate? thinking either 5w30 or 10w30? im using 0w30 now

Depends what oils you are looking at.
wink.gif



Agreed.

If you choose Redline, easy choice, 5w30. Even the 5w-20 Redline is more robust than most 30wts.


+1
 
Originally Posted By: BuickGN
I know who the guy is now and I think he was taken a little out of context.

I hope to get him over here, I would love to hear more info from a guy that has been into hundreds of these engines. IMO, I put more value into his teardown results than a UOA to determine the best viscosity of these popular Honda engines.


Did you have any luck getting paul to sign up here? I spent a chunck of my afternoon on V6P reading his posts and videos. If he is the asian guy in one of the videos, he is young, looks like he belongs in high school. He is DA man on v6p. Thanks to both you and OP for pointing me towards V6P, learned tons!
 
I posted the link over on Acurazine. I don't think he has any interest in defending himself over here. I can't say I blame him, when I actually start racing and building again I doubt I'll put as much effort into the internet boards either.

It would be nice to hear his teardown results in a little more detail though. Since he's been into so many of these engines, I'm sure he's seen some sort of trends with the different oils. Even so, just posting facts would lead to a flamewar.
 
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