Flywheel Question
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Senior User
Joined: Sep 2007
Posts: 195
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From: Redwood Valley, CA
Flywheel Question
Will a single mass flywheel off of a 1999 PSD 6spd work on my 1997 PSD 5spd dual mass, and are there any good clutch options that will work with that flywheel/trans combo?
Post Fiend
Joined: Mar 2007
Posts: 9,010
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From: Johnson City, TN.
I don't have the answer you want because I don't know. It would seem since it is a 7.3 it should fit. Wow that is a good question. I have never seen that one. If it is possible that would be an economical way to get a SMF. Usuall a new one is around 200-300 bucks.You should be able to find a used SMF for a reasonable price.
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Senior User
Joined: Sep 2007
Posts: 195
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From: Redwood Valley, CA
I already have the 99 PSD single mass flywheel. My current truck has a dual mass. I inherited the single mass when one of my customers had me do the Luk conversion on his truck.
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Senior User
Joined: Sep 2007
Posts: 195
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From: Redwood Valley, CA
I am still wondering myself. I am tinking some of this running rough may be attributed to the DMF in this truck I have. I would like to use this 99 SD flywheel I have if I can.
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Playing in the Dirt
Joined: Oct 2005
Posts: 2,302
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From: Southwest Georgia
Did some checking and on the Carolina Clutch page: Luk Solid Flywheel Replacement: Flywheel & Stock Replacement Flywheel - Carolina Clutch it shows the same flywheel to fit a 94 to an 04. So the flywheel will fit.
But they show a different clutch for the 94-97 and then the 99-04, so I don't think that the clutch will work. Probably diffent input shafts on the trans.
So bottom line is, get the right clutch, have the flywheel resurfaced and your good to go.
But they show a different clutch for the 94-97 and then the 99-04, so I don't think that the clutch will work. Probably diffent input shafts on the trans.
So bottom line is, get the right clutch, have the flywheel resurfaced and your good to go.
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Playing in the Dirt
Joined: Oct 2005
Posts: 2,302
Likes: 1
From: Southwest Georgia
You would have to use a 94-97 clutch, SMF or DMF would be your choice. I would always go with a SMF over a DMF anyday.
Logistics Pro
Joined: Jul 2001
Posts: 4,137
Likes: 41
From: Marble Falls, Texas
Valair all day long. check out their web site, find the clutch you want. Call and talk to Dan or Kevin specificly. Tell them Cody from Death Row Diesel sent ya, and they will make the price even better. And also ask them about the flywheel. On their site they list 2 different part #'s. It could be because of a different pilot bearing. But ask Dan or Kevin. They will know without a doubt. Tell them I sent ya and they will answer all your question.
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Senior User
Joined: Sep 2007
Posts: 195
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From: Redwood Valley, CA
That is what I had been figuring. I am pretty sure that the input shaft is different between the 5 and 6 speeds. And I know that there are a couple different pilots as well on the gas motor trucks, one of which is the same as the SD 6spd. I'll be sure to look into Valair when I get ready to do a clutch. The clutch I have is a new Dual Mass. The previous owner had just had it installed before I got the truck, so I can address some of the other problems first. Gotta prioritize these projects ya know. Thanks to all for the info.