Lightweight flywheel discussion - lose torque?
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From: SaCrAmEnTo, CaLiFoRnIa, U.S.A
ive been hearing alot on light flywheels about loosing torque and not loosing torque. my freind says that u loose torque was wondering if this is true and if so how much would it realy matter?
thanks in advance and sorry for the stupid question i searched but found nothing
thanks in advance and sorry for the stupid question i searched but found nothing
It will not force the motor to loose or gain anything.
In fact, the lighter the flywheel, the more it will *feel* like there is more torque...you will accelerate faster because of the less rotational mass.
In fact, the lighter the flywheel, the more it will *feel* like there is more torque...you will accelerate faster because of the less rotational mass.
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From: SaCrAmEnTo, CaLiFoRnIa, U.S.A
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec.dc2 »</TD></TR><TR><TD CLASS="quote">it will only improve everything, although to me its not worth messing with unless you're replacing the clutch</TD></TR></TABLE>
yea im going to need a new clutch sometime soon and was looking at what i can do was thinking of toda high power clutch kit or act ss cluch hd pressure plate and a exedy lightweight flywheel to be cheap
yea im going to need a new clutch sometime soon and was looking at what i can do was thinking of toda high power clutch kit or act ss cluch hd pressure plate and a exedy lightweight flywheel to be cheap
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Joined: Feb 2002
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From: SaCrAmEnTo, CaLiFoRnIa, U.S.A
what kinda clutch/flywheel/Pressure plate should i get hears my mods
car
**2001 ITR
motor
**B18C5 (for the people that always ask dont know why but whatever)
modifications.
**Hytech header
**Hytech exhuast (with cat and resonator that came from hytech)
**Spoon Cams & Camgears. valve clearence set at (IN 0.18mm) (EX 0.20mm) thanks to Alan at A&J Racing Motorsports
**AEM cold air intake
**Apexi V-AFC controller
**FPR (wasnt touched)
to view a larger pic add a " .orig.jpg " at the end of the adress when you copy and past it to a browser
copy the shortcut on the bottom link and paste it into a internet browser to view a bigger picture
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car
**2001 ITR
motor
**B18C5 (for the people that always ask dont know why but whatever)
modifications.
**Hytech header
**Hytech exhuast (with cat and resonator that came from hytech)
**Spoon Cams & Camgears. valve clearence set at (IN 0.18mm) (EX 0.20mm) thanks to Alan at A&J Racing Motorsports
**AEM cold air intake
**Apexi V-AFC controller
**FPR (wasnt touched)
to view a larger pic add a " .orig.jpg " at the end of the adress when you copy and past it to a browser
copy the shortcut on the bottom link and paste it into a internet browser to view a bigger picture
Bigger Picture Of The DYNO
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Like I said before "You do not loose torque. the motor is still the same."
Your engine will spin quicker up and down the RPM range-
I went with the Comptech Al FW and would never go heavy again, and I'm 99.9% stock.
Go light and don't turn back.
Your engine will spin quicker up and down the RPM range-
I went with the Comptech Al FW and would never go heavy again, and I'm 99.9% stock.
Go light and don't turn back.
Thread Starter
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Joined: Feb 2002
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From: SaCrAmEnTo, CaLiFoRnIa, U.S.A
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DsR »</TD></TR><TR><TD CLASS="quote">do you drag/track/daily drive or all of the above?</TD></TR></TABLE>
im street driver and some days a drag not 100% racing it but sometimes i do a lot and sometimes not that much mostly drag not that much track
im street driver and some days a drag not 100% racing it but sometimes i do a lot and sometimes not that much mostly drag not that much track
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bbasso »</TD></TR><TR><TD CLASS="quote">Like I said before "You do not loose torque. the motor is still the same."
Your engine will spin quicker up and down the RPM range-
</TD></TR></TABLE>
What about inertia? Could that be considered 'initial torque' or something to that effect? A heavy flywheel should have a lot more stored energy when you let the clutch out vs. a light one.
Either way, I dont think it matters. I'm stock(except flywheel and clutch) and find it hard to take off with my ACT clutch without spinning the wheels a little. I dont think I need more torque in the 1,000-2,000rpm range...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bbasso »</TD></TR><TR><TD CLASS="quote">
I went with the Comptech Al FW and would never go heavy again, and I'm 99.9% stock.
Go light and don't turn back.</TD></TR></TABLE>
I have the 6.7lb comptech as well, and would never go back. If they made one lighter, I would go with it.
Your engine will spin quicker up and down the RPM range-
</TD></TR></TABLE>
What about inertia? Could that be considered 'initial torque' or something to that effect? A heavy flywheel should have a lot more stored energy when you let the clutch out vs. a light one.
Either way, I dont think it matters. I'm stock(except flywheel and clutch) and find it hard to take off with my ACT clutch without spinning the wheels a little. I dont think I need more torque in the 1,000-2,000rpm range...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bbasso »</TD></TR><TR><TD CLASS="quote">
I went with the Comptech Al FW and would never go heavy again, and I'm 99.9% stock.
Go light and don't turn back.</TD></TR></TABLE>
I have the 6.7lb comptech as well, and would never go back. If they made one lighter, I would go with it.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by capcon83 »</TD></TR><TR><TD CLASS="quote">ive been hearing alot on light flywheels about loosing torque and not loosing torque. my freind says that u loose torque was wondering if this is true and if so how much would it realy matter?
thanks in advance and sorry for the stupid question i searched but found nothing</TD></TR></TABLE>
u will not lose tq for sure cuz it has nothing to do with motor. but basically you REV faster with lighter flywheel but also drops faster when u shift, for me , lightest are not always the best so all your choice
thanks in advance and sorry for the stupid question i searched but found nothing</TD></TR></TABLE>
u will not lose tq for sure cuz it has nothing to do with motor. but basically you REV faster with lighter flywheel but also drops faster when u shift, for me , lightest are not always the best so all your choice
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by YelLowITR »</TD></TR><TR><TD CLASS="quote">
u will not lose tq for sure cuz it has nothing to do with motor. but basically you REV faster with lighter flywheel but also drops faster when u shift, for me , lightest are not always the best so all your choice
</TD></TR></TABLE>
i'm sorry. edumacate me... when are lightest flywheels not always the best?
I must have missed the memo from billgates stating such.
u will not lose tq for sure cuz it has nothing to do with motor. but basically you REV faster with lighter flywheel but also drops faster when u shift, for me , lightest are not always the best so all your choice
</TD></TR></TABLE>i'm sorry. edumacate me... when are lightest flywheels not always the best?
I must have missed the memo from billgates stating such.
Thread Starter
Honda-Tech Member
Joined: Feb 2002
Posts: 390
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From: SaCrAmEnTo, CaLiFoRnIa, U.S.A
if there two identical type r's and only different is the flywheel, if one with comptech 6.75lb flywheel and one with stock 15lb and race from 1k rpm and on, is one going to be faster than the other and if so by how much?
just wondering
thanks in advance
just wondering
thanks in advance
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soup **** »</TD></TR><TR><TD CLASS="quote">
i'm sorry. edumacate me... when are lightest flywheels not always the best?
I must have missed the memo from billgates stating such.</TD></TR></TABLE>
With drag racing, sometimes it is better to have a heavier flywheel, it's easier to launch.
i'm sorry. edumacate me... when are lightest flywheels not always the best?
I must have missed the memo from billgates stating such.</TD></TR></TABLE>
With drag racing, sometimes it is better to have a heavier flywheel, it's easier to launch.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by capcon83 »</TD></TR><TR><TD CLASS="quote">if there two identical type r's and only different is the flywheel, if one with comptech 6.75lb flywheel and one with stock 15lb and race from 1k rpm and on, is one going to be faster than the other and if so by how much?
just wondering
thanks in advance</TD></TR></TABLE>
I don't think it will be a noticible difference, personally.
just wondering
thanks in advance</TD></TR></TABLE>
I don't think it will be a noticible difference, personally.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jond »</TD></TR><TR><TD CLASS="quote">I have the 6.7lb comptech as well, and would never go back.
If they made one lighter, I would go with it. </TD></TR></TABLE>
Exactly, the lighter the better. I'am completly happy with my 7lb Clutchmasters peice.
If they made one lighter, I would go with it. </TD></TR></TABLE>
Exactly, the lighter the better. I'am completly happy with my 7lb Clutchmasters peice.
Interesting question.
In the low speed I can't see too much of a difference except for shifting times, But as the car gains more speed and has to go through the rpm lets say 4th or 5th gear there will be less stress for the motor to turn while inching each rpm.
The way I think or the way I see it, A lighter FW will help over all.
As to say how much time in a quarter mile..... small amounts but in a long speed run or a track event where the car is always in the upper range of the motor I would tent to think that it might have a slight advantage.
Now I can't prove any of this but with common mechanical knowledge and basic thinking I would have to stand behind this. Also if you took a stick and put a 20lb weight on the end vs the same stick with a 5 lb weight I thinks its easier to keep the 5lb spinning then the 20lb... could this be common sense?Or just the happy smoke kicking in?
In the low speed I can't see too much of a difference except for shifting times, But as the car gains more speed and has to go through the rpm lets say 4th or 5th gear there will be less stress for the motor to turn while inching each rpm.
The way I think or the way I see it, A lighter FW will help over all.
As to say how much time in a quarter mile..... small amounts but in a long speed run or a track event where the car is always in the upper range of the motor I would tent to think that it might have a slight advantage.
Now I can't prove any of this but with common mechanical knowledge and basic thinking I would have to stand behind this. Also if you took a stick and put a 20lb weight on the end vs the same stick with a 5 lb weight I thinks its easier to keep the 5lb spinning then the 20lb... could this be common sense?Or just the happy smoke kicking in?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by capcon83 »</TD></TR><TR><TD CLASS="quote">if there two identical type r's and only different is the flywheel, if one with comptech 6.75lb flywheel and one with stock 15lb and race from 1k rpm and on, is one going to be faster than the other and if so by how much?
just wondering
thanks in advance</TD></TR></TABLE>
The one with the lighter flywheel will definitely be faster - assuming everything else is equal. There was a good article about lightweight flywheels in Grassroots Motorsports a while back. They don't have the article online though.
This is the exact same concept as putting lightweight wheels on your car. Less rotational mass is a good thing.
just wondering
thanks in advance</TD></TR></TABLE>
The one with the lighter flywheel will definitely be faster - assuming everything else is equal. There was a good article about lightweight flywheels in Grassroots Motorsports a while back. They don't have the article online though.
This is the exact same concept as putting lightweight wheels on your car. Less rotational mass is a good thing.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BolivianDc2 »</TD></TR><TR><TD CLASS="quote">revs up faster</TD></TR></TABLE>
This is the phrase that about 95% of people on this site use to describe why a lightweight flywheel is good. WTF are you trying to say???
A) The car accelerates faster
B) The engine revs faster with the clutch depressed?
It sounds like you, and everyone else, are trying to say B. If so... who cares?
Yes, I know about rev-matching - but from where I'm sitting, "revs faster" is a meaningless descriptor.
Jeff - who has lightweight flywheels on his cars - and for a reason better than that they "rev faster".
This is the phrase that about 95% of people on this site use to describe why a lightweight flywheel is good. WTF are you trying to say???
A) The car accelerates faster
B) The engine revs faster with the clutch depressed?
It sounds like you, and everyone else, are trying to say B. If so... who cares?
Yes, I know about rev-matching - but from where I'm sitting, "revs faster" is a meaningless descriptor.
Jeff - who has lightweight flywheels on his cars - and for a reason better than that they "rev faster".
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SoCal ITR »</TD></TR><TR><TD CLASS="quote">
I don't think it will be a noticible difference, personally.</TD></TR></TABLE>
than you have some reading to do.
do you think you wont notice the removal of rotational mass ?
I don't think it will be a noticible difference, personally.</TD></TR></TABLE>
than you have some reading to do.
do you think you wont notice the removal of rotational mass ?


