Making a change to my race motor build.

[Krooser]

My trust in Ma Mopar metallurgy is still intact but I made a deal to buy a set of nice used Crower billet rods in place of my freshly redone 340 pieces.

No doubt the OEM could handle the self imposed 7200 rpm limit I have set but these were a good deal and I pulled the trigger.

Should have them Monday. I'll send them out to be checked.and resized as needed. I think the bolts will be ok.

These are vintage 1990 and were in a weekend cruiser that had the occasional 6k blast thru the traps.

Most of my engine is from 1993 so they will go good together.

I get the block back Oct 5th.

 

[Rocket]

They are great rods. I bet you saved a little weight at the same time.

 

[Krooser]

They are great rods. I bet you saved a little weight at the same time.

Actually those Crowers are within a few grams of the OEM.

I also found a deal on some Oliver rods...those a good. But I have a bit dhet..

 

[Krooser]

These still have bolts and nuts instead of the newer style with just threaded bolts....still plenty good.

 

[Krooser]

View attachment 1715601079

 

[Krooser]

Okay.....well here's a fly in the ointment...

Got home last night about 9pm. I figured I'd get out my scale and calipers and do some measuring.

I couldn't believe my eyes....the piston pins are .927 not .984 like I need for my new pistons. The guy said in his ad "stock Mopar dimentions"... dammit!

I'll get in touch with him to see what he says. It's likely I can get them honed to fit...we will see.If not I'll go after a refund thru PayPal. I paid via goods and services not F&F...

 

[yellow rose]

Okay.....well here's a fly in the ointment...

Got home last night about 9pm. I figured I'd get out my scale and calipers and do some measuring.

I couldn't believe my eyes....the piston pins are .927 not .984 like I need for my new pistons. The guy said in his ad "stock Mopar dimentions"... dammit!

I'll get in touch with him to see what he says. It's likely I can get them honed to fit...we will see.If not I'll go after a refund thru PayPal. I paid via goods and services not F&F...

You’re probably screwed. Maybe, just maybe you can use a Tobin-Arp or similar to bore the pin end of the rod out to take a Chrysler bushing, but the pin end looks mighty thin so there may not be enough material there to do it.

I know some brave cats who would run it without a bushing, but I ain’t got that kinda guts.

 

[Rocket]

Nice rods. Is the big end Small block Mopar? What length are they?

 

[Krooser]

Nice rods. Is the big end Small block Mopar? What length are they?

Big end is Mopar from what I measured with my calipers. I'll use my mics to get an exact measurements. I might just slide the rod and bearing on my crank to see how it fits.

The length appears to be stock just by comparing with a stock rod but going to measure them.

YR....lots of steel to steel used on high end engines. The Pankls I have came from Hendrick and that is how they are. My late buddy Jim Watson was a crank specialist for Rousch and he said that's what they do.

 

[Krooser]

Looks like Baxter Engines that did the machine work on my block can handle the fix on these rods.

Gary Baxter said he can either hone the existing bushings, use a thin new bushing or bore the small ends for a new bushing. Depends on the meat on the small end.

I also let the guy I bought these from that I wasn't PO'd at him...stuff happens. He seems like a stand up guy...