how does your car start since haveing a lightened fly... my theory is that it is going start easier and faster (I will have a 7.5 lb fly) is there any truth to this?

thanks mike

 

nah mine start the same it just idles higher for a bit then drops back to normal

 

Mine cranks a lot quicker.

 

see with all that extra wieght gone I figured it would fire right off.

 

I think mine starts a bit faster (12.5# wheel).

 

Hey suggestions for flywheel brand for something about 8.5lbs and chromoly. Ive read a lot but am wondering about everyone's experiences with different ones.

 

xAct - 8.8 pounds. I've got the 12.5 and wish I would have gotten the 8.8 after seeing the effects of the lightened flywheel.

 

use search. ive heard nothing but good things about the fidanza..i kno u asked for chromoly, but just thought id share.

 

I know that ACT has a prolite chromolgy 8.8 lbs unit that they're selling. i just ordered off my ACT streetlite, and it is 12.5 lbs.

 

i know that http://www.optauto.com has some flywheels, and sell ACT. thats where i got mine. good luck, just waiting for mine to get here now.

 

Went with Fidanza. I'm delighted with both the build quality and the performance.

 

7.5lb fly here. I didnt really pay attention before, but I think it is about the same if not a tad faster at starting up.

 

I doubt that it will have much effect. The biggest resistance to turning is the compression. Ever cranked a motor with the plugs out?

 

higher compresion=quicker starts? is that what your saying

 

The opposite. The force required to compress the intake charge in the cylinder is the biggest load the starter has to bear. That's why I posed the question: "Ever cranked an engine with the spark plugs removed?". With the plugs out, the engine spins very rapidly with the starter.

 

i would figure on a boosted car you would spool faster since youy would rev quicker, so why do people advise against light fly's for boost?

 

exactly what b19coupe said. ever try to turn you motor when you do a valve adjustment with the spark plugs in, and with the spark plugs out, you feel a difference in the amount of force you gotta use to turn the motor over. so without the plugs, the motor spins quicker and easier.

 

i've heard that a med. lightened flywheel is best for turbo's, like a 10-12 lbs unit. it wont drop revs too quick and still keep you in boost range.

 

but wouldnt the lesser weight help you spool back up quicker

 

I did not notice any difference in starting. I will say that I went with a 12lbs flywheel and it is not light enough. If I had to do it over I would probably get something in the 9lbs range.

 

yea, but can you tell a good difference with tehe 12 lbs flywheel in your car now? cause i have a 12.5 lbs one coming in the mail soon

 

I have the comptech chromoly 8.75lb wheel. Starting time of the car has not changed one bit. However throttle response is greatly improved. It just a blip of the throttle to rev match...very nice!

 

advantages and disadvantages of a lightened flywheel please...will it be worth it in my ls when i grop my new clutch in...

 

The advantages are that your car will rev quicker. There's a graph around here, the only one I've seen, it shows a clear HP gain w/ a lighter fly. There are no disadvantages IMO. Make the engine move less mass and it has more power and revs faster.

 

how much do those run for? i was thinking of getting the comptech flywheel. U said chromoly right? how much of a differance do you feel, accel/decel?