4A 7A Clutch Question

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speedmaster
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4A 7A Clutch Question

Postby speedmaster » Wed Feb 25, 2015 3:25 pm

I have a few question on clutch system.

1. Does a 7A 200mm flywheel work with 215mm clutch? The reason i asked is i found an affordable light flywheel compared to Fidanza 215mm flywheel. was thinking if its ok or safe to match them together.

2. i was told that single/multi plate clutch kit does not release as much HP as the normal single clutch kit. Is this true?

my setup is a 7age 20v. im not sure if the 200mm + light FW is better or less performance than 215mm + oem FW.

thanks

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morgan
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Re: 4A 7A Clutch Question

Postby morgan » Fri Feb 27, 2015 11:26 am

don't mix and match the 200 & 212mm, and keep in mind that the 7AFE is a 6 bolt flywheel, while the 4AGE is 8. 4AC is 6, as well as the 4AFE.
haha cali...i got one of your 86's and you're not getting it back.
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speedmaster
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Re: 4A 7A Clutch Question

Postby speedmaster » Fri Feb 27, 2015 2:45 pm

My 7a flywheel is 6 bolt 215mm

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morgan
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Re: 4A 7A Clutch Question

Postby morgan » Fri Feb 27, 2015 5:57 pm

I was hnaware the 7afe was 2-5mm, im used to hearing 200 & 212 for the 4age's. Regardless, dont mix and match different size clutch and flywheels
haha cali...i got one of your 86's and you're not getting it back.
My turd of an 86
20v swapped 86 write-up

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speedmaster
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Re: 4A 7A Clutch Question

Postby speedmaster » Sun Mar 01, 2015 6:53 am

morgan wrote:I was hnaware the 7afe was 2-5mm, im used to hearing 200 & 212 for the 4age's. Regardless, dont mix and match different size clutch and flywheels



maybe its 212mm my bad

is there and HP loss if i switch from 212 to 200mm?

Toy86
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Re: 4A 7A Clutch Question

Postby Toy86 » Mon Mar 02, 2015 1:19 am

I don't think you lose/gain any hp by changing to a different diameter flywheel.

I think the only thing that might change is torque band, since going to a smaller lighter flywheel will cuz the engine spin faster and give you better throttle response.

That's why ppl go with lighter flywheels so the engine has to use less force to get to the power band faster. This is just my theory.

I'm sure there are ppl on here that can break down the dynamics and engineering verbiage of how this works.

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speedmaster
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Re: 4A 7A Clutch Question

Postby speedmaster » Mon Mar 02, 2015 1:21 am

Make sense.

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Re: 4A 7A Clutch Question

Postby Jimmee1990 » Sun Apr 05, 2015 8:29 pm

The diameter of the flywheel itself between 200mm and 215mm set ups is the same, it's only the friction face diameter that's different. You won't lose or gain anything going between the two with power, torque or inertia. Just have more clamping area using a 215mm clutch and flywheel.

Also no difference in power between single and multi plate clutches, just more clamping area again.

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Re: 4A 7A Clutch Question

Postby speedmaster » Tue Apr 14, 2015 3:43 pm

Jimmee1990 wrote:The diameter of the flywheel itself between 200mm and 215mm set ups is the same, it's only the friction face diameter that's different. You won't lose or gain anything going between the two with power, torque or inertia. Just have more clamping area using a 215mm clutch and flywheel.

Also no difference in power between single and multi plate clutches, just more clamping area again.



thank you jimmee

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