Calgary - random talk thread
02-16-2013, 04:03 AM
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Looks like ill be going with the gmpp clutch and a stock flywheel.
Exsoccer, I got that info from one of my instructors when I was going through my automotive service course at SAIT here. The way it was explained to me is that the aluminum flywheel will have less inertia at a given rpm vs the heavier steel one, allowing the engine to rev faster, higher, and in theory, make more power (much like a balance shaft delete). The opposite is that with the clutch disengaged, the heavier steel flywheel carries more energy with it vs the aluminum at x rpm, allowing more energy to be transferred to the drivetrain once the clutch is engaged. I must have overestimated the gains from going to an aluminum flywheel, from most people I've talked to, there was a noticeable increase in the ability to rev faster.
Exsoccer, I got that info from one of my instructors when I was going through my automotive service course at SAIT here. The way it was explained to me is that the aluminum flywheel will have less inertia at a given rpm vs the heavier steel one, allowing the engine to rev faster, higher, and in theory, make more power (much like a balance shaft delete). The opposite is that with the clutch disengaged, the heavier steel flywheel carries more energy with it vs the aluminum at x rpm, allowing more energy to be transferred to the drivetrain once the clutch is engaged. I must have overestimated the gains from going to an aluminum flywheel, from most people I've talked to, there was a noticeable increase in the ability to rev faster.
Last edited by CaptainShortbus; 02-16-2013 at 04:14 AM.
02-16-2013, 04:12 AM
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Hey, someone else is still up during the early hours.
Thank goodness for sait, I downloaded 100's of pages of tech info needed for my sc build.
Looks like I'll be studying wiring diagrams this weekend!
Thank goodness for sait, I downloaded 100's of pages of tech info needed for my sc build.
Looks like I'll be studying wiring diagrams this weekend!
02-16-2013, 04:18 AM
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I have to study for my 3rd year exam. I nearly have the hours to be a journeyman mechanic, but work has been too busy for me to get time off to write the test. Thankfully the program I took has twice as much schooling as the normal apprenticeship route, and nearly all of the extra schooling was more electrical and diagnosis classes.
02-16-2013, 04:47 AM
Looks like ill be going with the gmpp clutch and a stock flywheel.
Exsoccer, I got that info from one of my instructors when I was going through my automotive service course at SAIT here. The way it was explained to me is that the aluminum flywheel will have less inertia at a given rpm vs the heavier steel one, allowing the engine to rev faster, higher, and in theory, make more power (much like a balance shaft delete). The opposite is that with the clutch disengaged, the heavier steel flywheel carries more energy with it vs the aluminum at x rpm, allowing more energy to be transferred to the drivetrain once the clutch is engaged. I must have overestimated the gains from going to an aluminum flywheel, from most people I've talked to, there was a noticeable increase in the ability to rev faster.
Exsoccer, I got that info from one of my instructors when I was going through my automotive service course at SAIT here. The way it was explained to me is that the aluminum flywheel will have less inertia at a given rpm vs the heavier steel one, allowing the engine to rev faster, higher, and in theory, make more power (much like a balance shaft delete). The opposite is that with the clutch disengaged, the heavier steel flywheel carries more energy with it vs the aluminum at x rpm, allowing more energy to be transferred to the drivetrain once the clutch is engaged. I must have overestimated the gains from going to an aluminum flywheel, from most people I've talked to, there was a noticeable increase in the ability to rev faster.
Now. About the horsepower and increase in gaining rpm speed. While on paper it makes sense and should allow you rev the engine up faster and make more power. It is HIGHLY unable to be proved. Like i said. There may be a variation in numbers on the dyno. But it is so small that even with back to back pulls on the same setup vs on with an alumin flywheel you wouldnt be able to tell a difference. Again. Even with the clutch and flywheel i have, combined with no m62 on the belt, no ac pump (stricly alternator on the belt) and not using the stock water pump and with a balance shaft delete. I feel a very, VERY slight increase in the speed at which the engine revs up.
Bottom line. Stock flywheel is good to 7500. No need to go to an aluminum unless youre going past that. I did 7500 with a stock valvetrain as well. >IF< you go with an aluminum flywheel. It needs to be balanced with the rotating assembly. Stock or not. The difference between stock flywheel and not, is hardly able to be recorded. Its like with sheding the weight of the car. Until you combine it with other things of the same benefit, you wont see a difference.
Last edited by EXsoccer1921; 02-16-2013 at 04:54 AM.
02-16-2013, 05:15 AM
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Out of curiosity, why would you need the rotating assy balanced for an aluminum flywheel? Don't they just balance the crank, rods, and pistons at the factory, then balance the flywheel separately? Is it to more evenly distribute the load of the rotating assy across the main bearings? That's the only reason I can think of why you would have them all balanced together.
On a side note, just met a guy who just picked up a sunburst orange lsj a week or so ago, apparently it is pretty much maxed out on the m62. Anyways, i told him to check out gmtoc and css.net. Can't remember his name for the life of me... mark or bryan... somethibg along those lines
On a side note, just met a guy who just picked up a sunburst orange lsj a week or so ago, apparently it is pretty much maxed out on the m62. Anyways, i told him to check out gmtoc and css.net. Can't remember his name for the life of me... mark or bryan... somethibg along those lines
02-16-2013, 09:45 AM
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i doubt he is maxed out but i am willing to bet it is a gmstg2.... is it a 06? it sounds like shyt i cant remember his names car..... i been here for over 5 yrs and no one has even come close to doing a full m 62 build in this town..... as matter of fact i believe i might be the only guy willing to do it.....
Last edited by jrmotosports 88; 02-16-2013 at 10:01 AM.
