DP #24 Engine failure....

[Chris "drooze" Wertman]

Originally Posted by Ed Wright

I keep seeing coments about Scat rods. There is nothing wrong with them. I have used them for years, they came with ARP 2000 bolts. Never had to re-size one or correct the balance on a new one right out of the box. Never one single failure. Machining has always been dead nuts. I can't say that for Eagle and some others. Putting Manley rods in that one sure isn't going to cure anything. Valve to piston contact had nothing to do with that failure, nor did the rods.

I will agree....I dont know about the rods coming out of round. I have not seen that in person, These do not have the ARP2000 bolts even just the base 8740's

I am shocked at the fact the rods held and didnt break, for a budget engine I will definatley consider them.

I will say the machining is like you said "dead nuts" on myself and others were suprised at a 300$ set of rods would be this accurate.

One of the "issues" with the Scat rod it it requires the crank to be reground and journals widened to work.

The manley does not.

In addition the manley well....its a good rod, and good for 1000 hp in this series thats been proven in many other engines. I do know well never make that kind of power, but I cannot see a Scat rod (not the one we have) doing that.

We got the real "bargain basement" of the scat rods. Most everyone sells good, better best and bargain....we got bargain.

Im not bashing scat or dont mean to, the choice by whoever it was that this particular scat rod was chosen, and we were not given a choice ? Well that is were the real issue lies.

And the bolts, we were led to believe the bolts were different and the 2000 series...they are not.

Your right also we thanks to the help here have come to the conclustion netiher the rods or the PTV contact caused our failure, but rather the bolts if they didnt played a role. of the ones I personally took out 2 (1 on each journal) took another 20+ lbs of torque to get to their "stretch" and suggested torque range of 63 lbs.... yes 63 lbs...

Having to take a stock crank and have it machined JUST to run these rods....when I can take a set of Manleys and they will run on the stock 2.125 journal and are better, have much better bolts and the same bearings HN, HXN, and more undersizes are available ? Well it makes sense to me anyway.

K1 is getting an H beam approved, that may be an option down the road, but isnt now, and when it will ? At least 6 weeks away according to Tom over at K1

Chris