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12-31-2015, 03:40 PM | #1 |
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clutch 9 inch vs 11 inch
Have what I think is A 37 truck motor.
It has an 11 inch clutch, fitting a 39 toploader to it for a fenderless hiboy roadster . Obviusly I do not need the truck clutch for such a light car, but if I leave it, are they are harder to push the pedal, or any other reason to fit a car 9 inch clutch ? If it is no difference I will leave it as to save changing the flywheel. |
12-31-2015, 03:55 PM | #2 |
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Re: clutch 9 inch vs 11 inch
I have a 11 inch in my 47 pkp. and it is a little harder to hold say at a stop light then my 39 which has a 9 inch Is your flywheel drilled for a 9 inch SUNSHINE
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12-31-2015, 04:37 PM | #3 |
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Re: clutch 9 inch vs 11 inch
In city traffic your left leg will get tired pushing the clutch. I would redrill for a 10 inch? IMO
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12-31-2015, 05:05 PM | #4 | |
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Re: clutch 9 inch vs 11 inch
Quote:
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12-31-2015, 05:12 PM | #5 |
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Re: clutch 9 inch vs 11 inch
Have Fort Wayne clutch build you a 9" clutch,you will not regret it.Phil
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12-31-2015, 05:27 PM | #6 |
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Re: clutch 9 inch vs 11 inch
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12-31-2015, 05:28 PM | #7 |
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Re: clutch 9 inch vs 11 inch
I Agree with trainguy . Plus your left leg will thank you!
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12-31-2015, 05:35 PM | #8 |
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Re: clutch 9 inch vs 11 inch
Fort Waynr makes a nice 9" and it's much lighter. Now if you had a 302 HP Mustang with a T-5. You'd also have a 9" clutch. However the one thing an 11" clutch and flyeheel will do is:: Burn rubber with the engine turned off.
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12-31-2015, 05:56 PM | #9 |
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Re: clutch 9 inch vs 11 inch
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12-31-2015, 06:01 PM | #10 |
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Re: clutch 9 inch vs 11 inch
I would rather have a clutch that you don't have to pull the pan to replace.
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12-31-2015, 08:19 PM | #11 |
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Re: clutch 9 inch vs 11 inch
Thanks all for info.
Think I will change flywheels and go 9 inch. Truck flywheel is not drilled for both. |
12-31-2015, 08:21 PM | #12 |
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Re: clutch 9 inch vs 11 inch
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12-31-2015, 08:38 PM | #13 |
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Re: clutch 9 inch vs 11 inch
I use 9in. in about 90% of my engines (Fort Wayne) If its a real hot engine I have them install stiffer springs the PP, the 9in. is a lot lighter than the 11-10 set up. NOW, this is for street rods mainly. Walt
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12-31-2015, 08:50 PM | #14 |
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Re: clutch 9 inch vs 11 inch
Walt what flywheels do you tend to use? Stock, turn-downed stock, aluminum with steel insert ?
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12-31-2015, 08:53 PM | #15 |
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Re: clutch 9 inch vs 11 inch
From someone who has an 11 inch in a fenderless truck use a 9 inch
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12-31-2015, 09:09 PM | #16 |
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Re: clutch 9 inch vs 11 inch
The aluminum wheel with the steel insert is nice for real light car 12#, but expensive, It's a lot cheaper to turn down a stock wheel to about 20# and have it balanced. If you use a real light wheel in a heavy car it's hard to take off up hill, you have to rev the engine. Remember a Model A engine has a 65# flywheel and 40HP, if the engine dies you can ride home on the flywheel. Walt
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12-31-2015, 09:37 PM | #17 |
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Re: clutch 9 inch vs 11 inch
Yep, I like the light flywheel/clutch assy in a light (stripped down) car. Just curious about your input.
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01-01-2016, 10:43 AM | #18 |
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Re: clutch 9 inch vs 11 inch
I have an 11" in my truck, came that way from Ford, I can't tell the difference between it and the one in my 06 Jeep. Neither causes any undue fatigue.
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01-01-2016, 09:45 PM | #19 |
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Re: clutch 9 inch vs 11 inch
Does the throw out bearing sit in the same place out from end of crankshaft on both the 9 inch and 11 inch ?
Ie, are the flywheels the same thickness and when clamped down, are the fingers in identical positions ? Reason for asking is the sump is back on and I am wanting to mock up the engine/box /pedals/ tailshaft assembly, and will change the flywheel /clutch when pulled apart again. |
01-01-2016, 10:06 PM | #20 | |
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Re: clutch 9 inch vs 11 inch
Quote:
Walt, I will bring you a couple extra lipped flywheels for 9" clutches when I come up to see you.
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