SamIYam Lost my Clutch/Pressure Plate for my Flathead

[MattStrube]

Hey everyone, on my way to Chicago, my pressure plate seemed to have disappeared. It was with my stuff when I last saw it HMMMM??? I've stopped blaming Sam and started looking for a new one. http://www.jalopyjournal.com/ubbthreads/images/graemlins/smile.gif Now I'm in the position of finding the exact one that'll work well with a 28-29 Roadster weight wise and all. What do you guys think is the right size clutch 10" 11" or even 9" I have no experience in this area and could use a little assistance. What should I expect to pay for a good core, my machine shop guy rebuilds them for $100.

[Flat Ernie]

You probably have no reason to use anything larger than the 9" clutch - the 11" flywheel is VERY heavy & definitely not requried in that light of a car. The 9 & 10 are pretty much the same (if not exactly) flywheel size/weight wise.

http://www.jalopyjournal.com/ubbthreads/images/graemlins/cool.gif

[tommy]

measure your flywheel to see what you need...unless he lost that too. http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif

[392_hemi]

The easiest way to go is to get one that matches the bolt pattern on your current flywheel. Mine was drilled for a 9 1/2" clutch, and I had a hard time finding the right parts. But I got them from Red's Headers and they were a real pleasure to do business with.

[MattStrube]

No I have the flywheel, but it measures 13 and almost 1/4" across. here's the picture with the tape. Not sure how it is to be measured.

[SamIyam]

[ QUOTE ]
No I have the flywheel, but it measures 13 and almost 1/4" across. here's the picture with the tape. Not sure how it is to be measured.

[/ QUOTE ]

Then you need a 13 inch clutch then... dumbass!
While you're out looking for one of those... ask around for a radiator for my Corvair and some muffler bearings for my Chevy... http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif
Sam.

[SamIyam]

psp... looks like your flywheel is for about a 9" clutch disk... see the pattern it made?
Sam.

[Crestliner]

Fly wheels are the same size, just drilled for different pressure plate size.

[Crestliner]

flywheels are the same just drilled for different size pressure plates. Might have a extra around.

[MattStrube]

So do I need a new flywheel and pressure plate for the 10". It looks like the holes are about 11" apart, so did I have an 11" clutch?

[Crestliner]

Not 11", the hole for the 11" are close to the edge. You have a 9 or 10. Send the measurements and might have one to go by.

[FLAT-TOP BOB]

urkillinmesmalls

i'll know something on the clutch for ya in the morning!

[cadlights]

Here's one I took out of a 53 Ford truck. Needs reserfacing but springs are almost like new. It says 9 1/2 inch. $20.00 plus shipping if you are interested.
http://img.photobucket.com/albums/v298/cadlights/flatheadclutch002.jpg
http://img.photobucket.com/albums/v298/cadlights/flatheadclutch001.jpg

[Rocky]

Matt...the tape measure in the photo says the worn circle on the flywheel where the clutch disc rides appears to be about 9 and 1/2"...That's whatcha need.
And tell your brother he owes you the money it takes to buy a new one...buy the best they have....

[Flat Ernie]

[ QUOTE ]
flywheels are the same just drilled for different size pressure plates. Might have a extra around.

[/ QUOTE ]

The truck 11" flywheels are significantly heavier. Add the extra mass of the 11" pressure plate & it's a fair bit of weight - nice in a big heavy truck to get it moving, but unnecessary in a small car. The 11" pressure plate is stiffer too, but a lot of folks say it's just fine.

9.5" came stock in shoeboxes, so if it'll get those tanks moving, it should do fine in your A

http://www.jalopyjournal.com/ubbthreads/images/graemlins/cool.gif

[willowbilly3]

[ QUOTE ]
[ QUOTE ]
No I have the flywheel, but it measures 13 and almost 1/4" across. here's the picture with the tape. Not sure how it is to be measured.

[/ QUOTE ]

Then you need a 13 inch clutch then... dumbass!
While you're out looking for one of those... ask around for a radiator for my Corvair and some muffler bearings for my Chevy... http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif
Sam.

[/ QUOTE ]

To which I have to call bullhonkers. Clutch size isn't determined by rhe overall diameter of the flywheel, it is the disc and it looks like you had a 9-9 1/2 incher on there before

[MattStrube]

So lets regroup here, is the flywheel I have ok for a roadster? All I need is the 9 1/2" clutch? That seems to be the consensus?

[Crestliner]

send me your pressure plate bolt pattern measurements.

[Kevin Lee]

Just so you know the 9 1/2" clutch caused some minor problems for me. Seems everyone carries either 9, 10, or 11 inch discs. So if you can get a pressure plate that's a little more standard I'd go for that. I had a custom disk made - it was cheaper that redrilling the flywheel or tracking down a different press. plate with the right pattern - and everything went together perfectly.

[MattStrube]

I'm at work now Max, I'll get those to you. Flat-Top is tracking down a pressure plate for me as well, just determining if a 10" is ok for a roadster? I found the old disk and it's 10" across. I'll measure that stuff tomorrow morning. matt

[Crestliner]

If he doesn't have one I might.

[MattStrube]

Sounds good, thanks for the help...one of these days I'm going to pull out the tranny parts and call you. Definately before the Indy swap coming up.