Internal and external balanced engines
Thread Starter
Melting Slicks
Joined: Jul 2006
Posts: 2,373
Likes: 6
From: Baltimore MD
Guys heres a link to the kit i bought,it says it was balanced.or a kit like mine,dont remember if this was the actual kit i have or not.
http://cgi.ebay.com/ebaymotors/ws/eB...7766&rd=1&rd=1
http://cgi.ebay.com/ebaymotors/ws/eB...7766&rd=1&rd=1
Last edited by Billysvette; Dec 7, 2009 at 08:24 PM.
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
Guys heres a link to the kit i bought,it says it was balanced.
http://cgi.ebay.com/ebaymotors/ws/eB...7766&rd=1&rd=1
http://cgi.ebay.com/ebaymotors/ws/eB...7766&rd=1&rd=1
It did not say anything about the rods being sized on both ends or the pin bores on the pistons being pin fit either.
Your not the first one to burned by these budget kits as I have seen and got calls about this stuff all the time.
For about 1900.00 dollars you could have bought a Callies set up with Callies compstar 4340 crank, Compstar 6 inch I beam rods and Mahle pistons and file fit rings and rods and main bearings and balanced. There are a lot of good deals on nonbudget rotators.
Even these kit both ends of the rods need to sized and the Mahle pistons useally don't have to touch the pin bores in the pistons.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
My brand new $700 4340 H beam stroker rods had to be resized right out of the box as the big end was egg shaped. So I would be checking $200 SIR rods for sure. Lots of things that just never get checked or done result in engine failures 
Thread Starter
Melting Slicks
Joined: Jul 2006
Posts: 2,373
Likes: 6
From: Baltimore MD
Those cranks come through with a target bob weight of 1900 grams and do a search on Sir rods as we had a set in the shop last month a customer brought in and I took one loosed the bolts and retorqued the bolts to specs and the rod was .0012 out of rod, The custome said it would be fine Long story short the engine did not last a week and it was knocking. And I only checked one rod.
It did not say anything about the rods being sized on both ends or the pin bores on the pistons being pin fit either.
Your not the first one to burned by these budget kits as I have seen and got calls about this stuff all the time.
For about 1900.00 dollars you could have bought a Callies set up with Callies compstar 4340 crank, Compstar 6 inch I beam rods and Mahle pistons and file fit rings and rods and main bearings and balanced. There are a lot of good deals on nonbudget rotators.
Even these kit both ends of the rods need to sized and the Mahle pistons useally don't have to touch the pin bores in the pistons.
It did not say anything about the rods being sized on both ends or the pin bores on the pistons being pin fit either.
Your not the first one to burned by these budget kits as I have seen and got calls about this stuff all the time.
For about 1900.00 dollars you could have bought a Callies set up with Callies compstar 4340 crank, Compstar 6 inch I beam rods and Mahle pistons and file fit rings and rods and main bearings and balanced. There are a lot of good deals on nonbudget rotators.
Even these kit both ends of the rods need to sized and the Mahle pistons useally don't have to touch the pin bores in the pistons.
S.O.B chinese crap
Last edited by Billysvette; Dec 7, 2009 at 08:35 PM.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Guys heres a link to the kit i bought,it says it was balanced.or a kit like mine,dont remember if this was the actual kit i have or not.
http://cgi.ebay.com/ebaymotors/ws/eB...7766&rd=1&rd=1
http://cgi.ebay.com/ebaymotors/ws/eB...7766&rd=1&rd=1
Still better than taking the motor apart and not much difference than dropping the tranny, that's a pain the azz too.
Thread Starter
Melting Slicks
Joined: Jul 2006
Posts: 2,373
Likes: 6
From: Baltimore MD
You are going to have to pull the motor and take a new steel ( I wouldn't use the aluminum try and sell it ) flywheel and the flexplate that came with the kit to shop that knows how to match the balance on the flexplate to the flywheel and take a chance.
Still better than taking the motor apart and not much difference than dropping the tranny, that's a pain the azz too.
Still better than taking the motor apart and not much difference than dropping the tranny, that's a pain the azz too.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Make sure you take it with the flexplate to a good machine shop. If they know how to match the balance it is not expensive at all, ask blockman shouldn't be more than 50 bucks 
Thread Starter
Melting Slicks
Joined: Jul 2006
Posts: 2,373
Likes: 6
From: Baltimore MD
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Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
We have seen the NAPA power brute kits off a lot one was off 48 grams.
Good luck
