Used Carrillo Rods
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Used Carrillo Rods
I think this may be my first post!
Anyway, I bought a 310" road racing engine that I'm building for drag racing.
It came with Carrillo rods, but I have no idea how many miles are on them. They magged fine and look perfect but who knows their history.
I'd like to use them if possible instead of an aluminum rod. But the engine will see close to 10,000 rpm at the stripe.
Should I buy new rods or give these a shot? I think the answer is to buy new ones but wanted to ask in case I'm being over cautious.
Anyway, I bought a 310" road racing engine that I'm building for drag racing.
It came with Carrillo rods, but I have no idea how many miles are on them. They magged fine and look perfect but who knows their history.
I'd like to use them if possible instead of an aluminum rod. But the engine will see close to 10,000 rpm at the stripe.
Should I buy new rods or give these a shot? I think the answer is to buy new ones but wanted to ask in case I'm being over cautious.
Re: Used Carrillo Rods
Thanks for the reply.
Hard to say. I have a similar engine that makes 771. But, I'm using a better set of heads this time around. I'm shooting for 790. I hate to spin it so high with such poor pushrod geometry, but I don't want to invest in a dart block right now and have the lifter bores offset. The block is a R302 with a bryant crank.
Thanks again.
Hard to say. I have a similar engine that makes 771. But, I'm using a better set of heads this time around. I'm shooting for 790. I hate to spin it so high with such poor pushrod geometry, but I don't want to invest in a dart block right now and have the lifter bores offset. The block is a R302 with a bryant crank.
Thanks again.
Re: Used Carrillo Rods
By the way, the rods don't have a tapered end toward the pin. They're like the old super speedway rods, but have 3/8 bolts. 5.7" long and kind of heavy.
Re: Used Carrillo Rods
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Re: Used Carrillo Rods
They will probably last forever- I ,personally, do not like heavy rods
JOE SHERMAN RACING
JOE SHERMAN RACING
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Re: Used Carrillo Rods
If you're not sure,send them off to Carillo for checking and refurbishing.
The Nazis didn't lose WWII,they just changed uniforms.Now they run the place.
Re: Used Carrillo Rods
Agree, Joe. There has to be a serious need, else heavy rods cause more problems than they offer benefits. Today's better pistons are so light, their inertial forces are lower and thus don't pull rods apart like the heavy slugs from the bad old days.
I'm building a stroker Packard V8 and prevailed on Adney Brown to weld one up for me. I thought I'd want the strongest rods available and spent the bucks for the long BBC Oliver rods. After getting the crank built up, Adney said the Olivers were so heavy it would take too much Mallory metal to balance. He said the Packard wouldn't be making the horsepower or the RPMs to need the Olivers and I'd have a better build with lighter SCAT rods.
Jack Vines
Studebaker-Packard V8 Limited
Obsolete Engineering
Studebaker-Packard V8 Limited
Obsolete Engineering
Re: Used Carrillo Rods
Thanks for the replies.
I talked to someone at Carrillo who said pretty much to run the rods and not worry about the rpm. I'm sending them to Carrillo to get check out as suggested.
I also don't like the weight. Kinda scares me for some reason and I don't want the engine to accelerate like a slug. That's not a good thing especially with a small engine.
I was surprised when the topic of rod length came up. I said that I would have preferred a shorter rod like a 5.4" rather than the longer 5.7" rod since I will have a 1.94 ratio with the longer rod. He said that the longer rod will help me at high rpm. I thought the opposite would be true.
Any ideas to share about the rod length and ratio?
I talked to someone at Carrillo who said pretty much to run the rods and not worry about the rpm. I'm sending them to Carrillo to get check out as suggested.
I also don't like the weight. Kinda scares me for some reason and I don't want the engine to accelerate like a slug. That's not a good thing especially with a small engine.
I was surprised when the topic of rod length came up. I said that I would have preferred a shorter rod like a 5.4" rather than the longer 5.7" rod since I will have a 1.94 ratio with the longer rod. He said that the longer rod will help me at high rpm. I thought the opposite would be true.
Any ideas to share about the rod length and ratio?
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Re: Used Carrillo Rods
fordified wrote: ↑Thu Oct 12, 2017 9:14 pm Thanks for the replies.
I talked to someone at Carrillo who said pretty much to run the rods and not worry about the rpm. I'm sending them to Carrillo to get check out as suggested.
I also don't like the weight. Kinda scares me for some reason and I don't want the engine to accelerate like a slug. That's not a good thing especially with a small engine.
I was surprised when the topic of rod length came up. I said that I would have preferred a shorter rod like a 5.4" rather than the longer 5.7" rod since I will have a 1.94 ratio with the longer rod. He said that the longer rod will help me at high rpm. I thought the opposite would be true.
Any ideas to share about the rod length and ratio?
The Nazis didn't lose WWII,they just changed uniforms.Now they run the place.
Re: Used Carrillo Rods
We've been there, got the scars to prove it..
Felix, qui potuit rerum cognscere causas.
Happy is he who can discover the cause of things.
Happy is he who can discover the cause of things.
Re: Used Carrillo Rods
A search will bring up more opinions and a few facts about the effect/non-effect of rod length versus RPM than you can read in a month.
Jack Vines
Studebaker-Packard V8 Limited
Obsolete Engineering
Studebaker-Packard V8 Limited
Obsolete Engineering
Re: Used Carrillo Rods
Thanks for the heads up.
Today was my first post but I've visited this site many times over the years. Great information here and lots of interesting discussions.
Today was my first post but I've visited this site many times over the years. Great information here and lots of interesting discussions.