tips for high boost/horsepower
#27
Boost Pope
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,046
Total Cats: 6,607
I read about this M1 conspiracy a while back, and decided to look at other oils. Using information gathered from the manufacturer's spec sheets, I put together a little chart tracking what I felt to be certain key properties and comparing them between M1 and the three underdogs. Here's the chart:
V@ indicates viscosity at the stated temperature. All else being equal, I prefer an oil with the lowest viscosity at low temp (to keep oil pressure manageable first thing on a cold morning) and with the highest viscosity when hot, to maintain good oil pressure when the engines' a blazin.
VI is Viscosity Index. All else being equal, a lower number is supposed to be better, though not even BobIsTheOilGuy seems to say why.
Pour and Flash are pretty self-evident. Lower is better for pour, higher is better for flash.
Of all the oils here, M1 0w40 has the highest viscosity at 100°C except for RedLine 10w40 and Amsoil AMO (both by ~ half a point) and those two have much higher viscosities at 40°.
Here's an interesting sidebar- Amsoil ACD is their diesel-rated 10w40. Its viscosity at 100° is more in line with a w30 oil, and it was only only Amsoil product I looked at which had no data at all on the HTHS 150° test.
V@ indicates viscosity at the stated temperature. All else being equal, I prefer an oil with the lowest viscosity at low temp (to keep oil pressure manageable first thing on a cold morning) and with the highest viscosity when hot, to maintain good oil pressure when the engines' a blazin.
VI is Viscosity Index. All else being equal, a lower number is supposed to be better, though not even BobIsTheOilGuy seems to say why.
Pour and Flash are pretty self-evident. Lower is better for pour, higher is better for flash.
Of all the oils here, M1 0w40 has the highest viscosity at 100°C except for RedLine 10w40 and Amsoil AMO (both by ~ half a point) and those two have much higher viscosities at 40°.
Here's an interesting sidebar- Amsoil ACD is their diesel-rated 10w40. Its viscosity at 100° is more in line with a w30 oil, and it was only only Amsoil product I looked at which had no data at all on the HTHS 150° test.
#28
I only browsed lightly on that site, and see nowhere where it mentions M1 either still being or not being synthetic. In a couple places it does state the protection will be the same. My point was if you want to use a synthetic be weary of M1, not 'SYTHETIC IS TEH UBER LUBER' and "SYNTHETIC PWNS ALL".
I personally feel that the synthetic oil is more consistant as far as molecule size, and contain less contaminants(which a good oil filter would take care of, but why make it work harder than it has to). However I would like you to take note that I said I personally and that this is just my opinion, everyone is entitled to thier own.
I personally feel that the synthetic oil is more consistant as far as molecule size, and contain less contaminants(which a good oil filter would take care of, but why make it work harder than it has to). However I would like you to take note that I said I personally and that this is just my opinion, everyone is entitled to thier own.
#31
Boost Czar
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,501
Total Cats: 4,080
Back to Subject:
Quoting myself:
It really doesn't take more than a well thought out design (reduce restriction, improve flow), good turbo choice (turbine large enough in both diameter and a/r that can spin fast & free enough, compressor large enough to flow the desired amount within the heat efficiency island), good thermal management (reroute, afrs, IC, etc) and a good tune (no ping, timing in check).
If I wasn't so worried about my stock 1.6L block, I could achieve 300rwhp on pump gas. Seeing 250rwhp at 13psi so far, however, I do worry about my stock internals, so I only boost within reason, keeping it around 200rwtq max.
Quoting myself:
It really doesn't take more than a well thought out design (reduce restriction, improve flow), good turbo choice (turbine large enough in both diameter and a/r that can spin fast & free enough, compressor large enough to flow the desired amount within the heat efficiency island), good thermal management (reroute, afrs, IC, etc) and a good tune (no ping, timing in check).
If I wasn't so worried about my stock 1.6L block, I could achieve 300rwhp on pump gas. Seeing 250rwhp at 13psi so far, however, I do worry about my stock internals, so I only boost within reason, keeping it around 200rwtq max.
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