wrong flywheel for merlin 509? inner diameter
Thread Starter
Melting Slicks
Joined: Jan 2006
Posts: 3,028
Likes: 2
From: North NJ
wrong flywheel for merlin 509? inner diameter
I received a practically new flywheel included in a package deal with my Merlin 509.
Flywheel looks to be in great shape but when i went to mount it on the crank tonight it didn't match up. The Merlin is internally balanced and this flywheel has no counterweight, good start. But the centering ring on the crank is 2.5" outer diameter, the hole on the flywheel is 2.0" inner diameter. Naga..Naga..Naganafit!
Can't just machine the hole bigger b/c the bolt holes also have to be moved out, same pattern just too close to center.
Is this flywheel for a SBC?
When I go to Summit or Jegs they don't give me that inner diameter so how do I know which one to order for the engine?
I pulled out my old one that came with the 454 that was in the car and that one fits the crank b/c it has the larger hole and bolt pattern.
What gives? I was hoping to put this thing in the car on Sunday. I can't get a new flywheel by then.
Have to give the seller a call tomorrow.
Any ideas what this flywheel belongs to? its steel.
Flywheel looks to be in great shape but when i went to mount it on the crank tonight it didn't match up. The Merlin is internally balanced and this flywheel has no counterweight, good start. But the centering ring on the crank is 2.5" outer diameter, the hole on the flywheel is 2.0" inner diameter. Naga..Naga..Naganafit!
Can't just machine the hole bigger b/c the bolt holes also have to be moved out, same pattern just too close to center.
Is this flywheel for a SBC?
When I go to Summit or Jegs they don't give me that inner diameter so how do I know which one to order for the engine?
I pulled out my old one that came with the 454 that was in the car and that one fits the crank b/c it has the larger hole and bolt pattern.
What gives? I was hoping to put this thing in the car on Sunday. I can't get a new flywheel by then.
Have to give the seller a call tomorrow.
Any ideas what this flywheel belongs to? its steel.
Thread Starter
Melting Slicks
Joined: Jan 2006
Posts: 3,028
Likes: 2
From: North NJ
Guess that engine isn't going into the car tomorrow.
Burning Brakes
Joined: Mar 2005
Posts: 1,139
Likes: 0
From: Salina Kansas
I have a stock sbc flywheel rebalanced for a 400 with a new ring gear on it that I would sell you for nothing, but I don't think the SB and BB interchange? It's also not neutral balanced nevermind.
You will probably have yours running before mine at least. I finally found my wiring short today though, so things are looking up.
You will probably have yours running before mine at least. I finally found my wiring short today though, so things are looking up.
Burning Brakes
Joined: Mar 2005
Posts: 1,139
Likes: 0
From: Salina Kansas
BTW, I got a cheap billet steel flywheel from CAT that was only like $100 off eBay. SFI approved as well. However, the machinist, when balancing it, thought there was a little runout on it, maybe .010, guessing. He didn't think it would hurt things since it's not an ultra high rpm motor. Also said, it might wear badely withe the ceramic clutch because the metal seemed a little soft when he balanced it. Probably should have just got a Hays for another $100, too late now though.
Instructor
Joined: Feb 2006
Posts: 118
Likes: 25
From: Killearn Scotland
I guess that at 509, we're talking big block, so I don't know how relavent this is, but...
On smallblocks the flywheel/flexplate mounting flange diameter is different between the older two piece rear seal cranks and the newer one piece rear seal crank.
I had a similar problem with an aluminium flywheel Keisler sent with my TKO package. I have a crank with a one piece rear seal, and the flywheel flange was too small for the flywheel they sent.
On smallblocks the flywheel/flexplate mounting flange diameter is different between the older two piece rear seal cranks and the newer one piece rear seal crank.
I had a similar problem with an aluminium flywheel Keisler sent with my TKO package. I have a crank with a one piece rear seal, and the flywheel flange was too small for the flywheel they sent.
Pro
Joined: Mar 2001
Posts: 633
Likes: 1
From: Hamilton, ON, Canada
C3 flywheels are the same for both small block & big block- both have a 2 1/2" diameter center register hole. Your flywheel with 2" center hole is obviously not the right match. Make sure you get one with the right # of teeth. Also, make sure you have the right bolt pattern for the clutch you're using.
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Thread Starter
Melting Slicks
Joined: Jan 2006
Posts: 3,028
Likes: 2
From: North NJ
Thanks guys for the replies.
I have talked to the previous owner/seller who has been great to deal with and he's ordered me a Hays 168 tooth flywheel. Should be here next week. I'll ship this one back to him.
I don't forsee the Hays flywheel having a problem mounting to the centerforce dual friction clutch but that would be my luck.
I'll let you know how things turn out.
I'll be fitting my hurst shifter linkage to the muncie in a few minutes and making sure everything is ready to go when i get the flywheel.
Thanks
I have talked to the previous owner/seller who has been great to deal with and he's ordered me a Hays 168 tooth flywheel. Should be here next week. I'll ship this one back to him.
I don't forsee the Hays flywheel having a problem mounting to the centerforce dual friction clutch but that would be my luck.
I'll let you know how things turn out.
I'll be fitting my hurst shifter linkage to the muncie in a few minutes and making sure everything is ready to go when i get the flywheel.
Thanks
