Pining the crank really neccesary?
Thread Starter
Teching In
Joined: Jun 2016
Posts: 43
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From: Anaheim, CA
Pining the crank really neccesary? So I picked up a used radix mp112 kit and it has everything but the crank pin kit and throttle body. I was wondering just out of curiosity as I m new to boost and wanted to know if pinning the crank was really neccesary. Does the balancer slip? I looked it up and the kit just to pin it was over $100. Seems steep for what it is. Seems like I could Haug go to a hardware shop and pick up some pins and a bit.
Also if anybody has a spare 99-92mm dbc tb they would let go cheap I could use it
Thanks for any help!
Also if anybody has a spare 99-92mm dbc tb they would let go cheap I could use it
Thanks for any help!
Thread Starter
Teching In
Joined: Jun 2016
Posts: 43
Likes: 0
From: Anaheim, CA
I get ya.Excuse my ignorance as I am new to the LS and boost game and know nothing of it. I still don't get the high cost though. I looked it up and it has a little dinky drill fixture but I still don't see $100+ worth. Maybe somebody already pinned their crank and are willing to let go of there little drill fixture thing.
Pin the crank. My crank is pinned on my mp112 car.
There is a good reason that pinning kits come with all s/c kits for these cars. If the balancer slips and there's a good chance that it will, it will chew up the snout on the crankshaft and then you will not be able to get a new balancer on tight and straight. May end up needing new crank, I have seen one spin and the aftermath.
You can find used kits on the classified section or maybe on ebay from time to time. The pins and the drill bits are standard hardware store type stuff. If you have to get a kit, you could probably resell it later.
There is a good reason that pinning kits come with all s/c kits for these cars. If the balancer slips and there's a good chance that it will, it will chew up the snout on the crankshaft and then you will not be able to get a new balancer on tight and straight. May end up needing new crank, I have seen one spin and the aftermath.
You can find used kits on the classified section or maybe on ebay from time to time. The pins and the drill bits are standard hardware store type stuff. If you have to get a kit, you could probably resell it later.
Thread Starter
Teching In
Joined: Jun 2016
Posts: 43
Likes: 0
From: Anaheim, CA
Pin the crank. My crank is pinned on my mp112 car.
There is a good reason that pinning kits come with all s/c kits for these cars. If the balancer slips and there's a good chance that it will, it will chew up the snout on the crankshaft and then you will not be able to get a new balancer on tight and straight. May end up needing new crank, I have seen one spin and the aftermath.
You can find used kits on the classified section or maybe on ebay from time to time. The pins and the drill bits are standard hardware store type stuff. If you have to get a kit, you could probably resell it later.
There is a good reason that pinning kits come with all s/c kits for these cars. If the balancer slips and there's a good chance that it will, it will chew up the snout on the crankshaft and then you will not be able to get a new balancer on tight and straight. May end up needing new crank, I have seen one spin and the aftermath.
You can find used kits on the classified section or maybe on ebay from time to time. The pins and the drill bits are standard hardware store type stuff. If you have to get a kit, you could probably resell it later.
That makes a lot of sense now. I didn't realize how much stress/resistance the S/C put on the crank/balancer. I appreciate the info!
How do you like your MP112?
Yes the balancer will want to try and spin-I used a pinning tool that was for a balancer with a keyway, and when I rem. the balancer, the pin in the crank had tried to dig into the balancer, so the pinning saved the crank/balancer.
This wasn't the front pinning tool-prob. a bunch of the tools floating around after someone used them, just need a pin or cut a 1/4 bolt as a replacement.
Then replace the bolt with a new one, and torq.
This wasn't the front pinning tool-prob. a bunch of the tools floating around after someone used them, just need a pin or cut a 1/4 bolt as a replacement.
Then replace the bolt with a new one, and torq.
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Always pin the crank even with non-forced induction hp bolt-ons. On my setup, Speed Inc. forgot to do this and it messed up the snout on my crank and the hub of my ATI super damper after just 3 dyno runs for about a total 4 hours of engine time. Mine was a D1SC Pro charger set up. I was not aware of the damage till eight years later because the car sat unfinished while I built my house and went to school.
Thankfully, when I decided to get back to a complete revamping of, and completion of my build, which is still inwork but moving forward nicely, my better machine shop here in Cali was able to turn down the crank snout but we had to special order a new Damper hub from ATI that was slightly smaller inside diameter at a mere cost to me of over $600 including the crank snout and double keys machined in instead of pinning.
Pin that sucker. And if someone else does it for you, verify it.
Lesson learned.
Thankfully, when I decided to get back to a complete revamping of, and completion of my build, which is still inwork but moving forward nicely, my better machine shop here in Cali was able to turn down the crank snout but we had to special order a new Damper hub from ATI that was slightly smaller inside diameter at a mere cost to me of over $600 including the crank snout and double keys machined in instead of pinning.
Pin that sucker. And if someone else does it for you, verify it.
Lesson learned.
Thread Starter
Teching In
Joined: Jun 2016
Posts: 43
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From: Anaheim, CA
Thanks everybody. I greatly appreciate all the feedback. I will definitely be pining the crank. I didn't know they didn't have jetways as this is my first LS. Doesn't make any sense to me that there would it even be a keyway.
Makes me curious now out the LSA and the LS9 that are supercharged. Are they keyed/pinned form the factory?
Makes me curious now out the LSA and the LS9 that are supercharged. Are they keyed/pinned form the factory?
Thread Starter
Teching In
Joined: Jun 2016
Posts: 43
Likes: 0
From: Anaheim, CA
I agree with that 100%. Was just stating that I don't see the reason it should cost so much. I also agree that it's better to learn here rather than learning when you have a failure.
TECH Apprentice
Joined: Sep 2006
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