I have low mile engine in the car about 15k . I was wondering if I installed manley forged i beam rods and pistons, with a MMR street/racing oil pump if it could support up to 500rwhp.
Manley forged rods and pistons?
- Thread starter jivepepper
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sgarlic said:
The rods are rated to 650.
The reason I ask is that I'm just planning on removing the old rods, pistons and oil pump. Then installing all the new forged parts and reassembling everything.
If the weights of the parts are different from stock, you will need to have the crank balanced again. You also need to check the bore/piston clearance and hone the cylinder walls for new rings. In short, take the block and crank and your new parts to a good shop and let them check everything out for you. Its not just a swap job with the crank left in place.
Joe
Joe
RedDaemon
10 Year Member
That's what I did. Although I think 500rwhp is reaching the limits of the stock nodular iron crank if memory serves.jivepepper said:
This is incorrect. The rods and pistons are what need to be balanced to one and other with a modular application. There is no need to have the crank reblanced as long as the piston and rod weights are matched. The only application in which you would need to have the crank balanced would be with a stroker set up......which usually comes pre-balanced when you buy the kit together anyway.Joe Lynch said:
Gearbanger 101 said:
The pistons weigh in between 392-393 grams would this be close enough. Would you have a idea of how much it cost to balance them and the rods? Thanks
What kind of pistons are they? Within 1-2 grams should be fine, but you should really contact the manufacturer directly for that info. I can't remember what my Diamond Pistons and Manley rods were balanced to from each other, but I'm heading out to the Garage later and I'll see if I can find the assembly card that came with the kit.
Gearbanger 101 said:
Rods bearings pistons and rings 750
head gasket kit 110
oil pump 209
Its not as good as a built short block but I'm poor.
The pistons look good, how about the rods. They should have the individual weights of each one marked on the outside of the box. At least my supplier did?
I haven't ordered them yet so I don't know? I don't see where you could take any material off the rods?
They don't, they cast (or in this case machine them) all the same, but weight them out individually and put the ones that match up closest with one and other in the same lots before selling them. After that, there are plenty of ways to take weight off them here and there. They'll drill out small sections in the surface of the rod, in area's that won't affect their structural integrity, much like one would when balancing a crankshaft dampner. They'll also shave off a sharp edge here and there. Little changes make a lot of difference in this case. Have you ordered any of your stuff yet, or just not the rods? If you've ordered nothing, check out this companiy http://www.modularperformance.com/ for ordering your parts. They were great for me to deal with, reasonably priced and everything came pre-balanced.jivepepper said:
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