Piston Swap
On The Tree
Joined: Oct 2011
Posts: 179
Likes: 3
From: Eastern Kentucky
It looks like we had some similar piston issues. Yours weighed 455 and 129 grams for a total of 584. If you want to get some SRP flat tops they would probably weigh real close to what mine did and no balance would be necessary. Here's a pic of my JE flat top.
Here's the Mahle -16 cc dish that I wanted to use.
As you can see there was a big difference in piston weight. Next I put the rings and pins on them and weighed again.
First the JE/SRP. Mine weighed EXACTLY the same as yours. That's pretty cool
Next I weighed the Mahle -16 cc with pins and rings. They weighed EXACTLY the same as the JE/SRP. I didn't have to rebalance. Maybe you could be so lucky. Get a set of the SRP flat tops and I'll bet the weight is real.....real close. I don't have mine. I sold them to Bruno in Croatia. I have the part number....somewhere if you need it. I could look around.
Here's the Mahle -16 cc dish that I wanted to use.
As you can see there was a big difference in piston weight. Next I put the rings and pins on them and weighed again.
First the JE/SRP. Mine weighed EXACTLY the same as yours. That's pretty cool
Next I weighed the Mahle -16 cc with pins and rings. They weighed EXACTLY the same as the JE/SRP. I didn't have to rebalance. Maybe you could be so lucky. Get a set of the SRP flat tops and I'll bet the weight is real.....real close. I don't have mine. I sold them to Bruno in Croatia. I have the part number....somewhere if you need it. I could look around.
On The Tree
Joined: Oct 2011
Posts: 179
Likes: 3
From: Eastern Kentucky
oh, I did not weigh with the rings.
I've got a pretty good database of piston combos that I've used maybe I can match something up. What are your specs? I've also got lists of different weight pins from manufacturers. We may get real close. I'm just goofing off today anyway.......may as well look around.
Cubic inches
Bore
rod length
Last edited by 1963SS; Dec 13, 2011 at 11:14 AM.
Thread Starter
Joined: Jun 2011
Posts: 1,046
Likes: 2
From: Massachusetts
Just called SRP and they make an upgraded pin that weighs 115 grams which will put me at 582 with the flat top. So that's 3 grams lighter than what I have now.
On The Tree
Joined: Oct 2011
Posts: 179
Likes: 3
From: Eastern Kentucky
Is that with the rings or without? That 3 grams won't make any difference if that is going to be the total. Sounds like you may have lucked out. Many high RPM engines usually overbalance about 10% anyways and it doesn't seem to hurt them. Just be sure to keep your RPM's above 7500 or so and you'll be fine.
Yup that's perfect.....they are going to send u the hardened lightened pins same ones I run.....also that 3gram lighter is fine I run a 51% overbalance on mine helps on a stroker.....I'm 6-7grams light iirc
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