e-racer-ls-1

iTrader: (1)

Looking for feedback.Can't beat the price but would like input from a vendor or anyone who has bought one.The name and price don't go together.Thanks to all.

serpentnoir

iTrader: (2)

I have one. 4" stroke. It's not installed yet. I can take pictures for you. The machining looks very good. I was very pleased to find out it is machined for 2 keys and comes with the keys. I needed a key for the balancer because I use a trigger and the balancer hub cannot move. Aside from that it looks like a crank.

Anything in particular you need?

e-racer-ls-1

iTrader: (1)

Just to say thanks,I am building them same motor( 4'' stroke)Who did you buy yours from?Did you shop around or just buy ??

Sales4@Texas-Speed

iTrader: (4)

We have been using callies cranks in most of the motors we build. They have been working great. The quality is always top notch, and they can take a beating with no issues. We have a c6 z06 in the back of the shop right now that puts down 1060 rwhp with that compstar crank. We are out of stock right now but hoping to have them back ASAP.

serpentnoir

iTrader: (2)

The LSC crank is a 5140 forging. The Compstar is 4340 forging if I remember correctly.

I bought it mainly because the 4340 forgings are overkill for what I do (550hp NA motor)

serpentnoir

iTrader: (2)

I always shop around down to the most insignificant items. Check your PM.

Pictures coming up.

serpentnoir

iTrader: (2)

AES Racing

iTrader: (6)

Have run the 3.825" LSc crank to 1060rwhp, run the 4.000" LSc crank to 800rwhp

Not saying its guaranteed to those power levels, we've had some people test the ragged edge with these no issues.

supermouse4

Beautiful looking crank, it is awesome that it can handle a lot of the power, near 1000 hp.

Sales4@Texas-Speed

iTrader: (4)

My mistake, I didn't even see the LSC in the title when I first posted. We have used the 5140 for a few NA builds and had some good luck with them as well. For anything big power I would go compstar for extra insurance.

1CAMWNDR

iTrader: (21)

I have a 4.100" Compstar in my car. No idea on HP but have not had any problems out of it in a year and 3 months.....

RENE'S RAGE

iTrader: (96)

Callies Compstar crank and rods.

Beau@SDPC

iTrader: (14)

I am willing to bet that none of them are the C series. First off they dont have the c series in the 4.100 stroke as of yet.

Normally with a compstar crank and rod combo, you will get the original compstar good to a nice amount of HP.

Per Callies, I believe these "C" series 5140 cranks were originally rated to about 650 HP.

Per talking to Callies today, they are now rated at 750-800HP. Not too shabby for some "budget crank".

serpentnoir

iTrader: (2)

I'm blueprinting the motor and I measured the LSC main journals last night: All 5 within 2.5592~2.5593". I am having fits with bearing clearance on #1. Standard Cevite H STD bearing show 0.0025" clearance (a little loose) and undersize Clevite H-001" show near zero clearance (0.0005"). That is too tight. I tried moving bearings around (journal to journal) to no avail.

I'll check the rod journals tonight.

Once cleaned the crank looks even better than in the pictures above. Mirror finish everywhere.

serpentnoir

iTrader: (2)

I finished measuring the crank and everything is perfect.

Main journals are all within 2.5592~2.5593 with none beyond 0.0001" out of round.

Runout on center journal is less than 0.0006"
Runout on rear seal journal is also less than 0.0006"

Rod journals all measured 2.0992~2.0993 with none beyond 0.0001" out of round.

For a "budget crank" the machining is excellent.

Upon further inspection I did notice that someone, somewhere did drop the crank on a hard surface and dented the side of #8 rod journal. Not too happy about that but I don't think it will be an issue but I will show it to my machinist when I get it balanced. I'll see what he says.

I'm posting this since info on the LSC crank is hard to find.

slowride

iTrader: (3)

Cool. What was going on in your above post with the number one main?

serpentnoir

iTrader: (2)

I decided to go with that clearance. Not much I can do about it. It measures 0.0025" one way and if I turn the bore gauge 90deg and take another measurement I get 0.0015". So average is 0.002". Not terrible but certainly not ideal. The issue is with the honing of that main from the factory. The crank is fine.

The H1 bearings are simply too tight for my build ( I got on average 0.0003~0.0005" clearance with them).