Stock Crank Pulley Pinned??? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Pt_killa · 11-19-2010, 09:42 AM

I've been building a cheap centri supercharger kit on my own for the past couple of months using parts I already owned. I built the whole bracket and tensioner assembly and had it mounted and running with a belt but forgot to check if the stock crank pulley is keyed to the crank. I wanted to ask the members of camaro5 if they knew before I pulled the crank pulley bolt or assembly off to check.

Nine Ball · 11-19-2010, 10:03 AM

Stock pulley is not keyed to the crank. Most blower kits come with a drill/ream/template/pin kit to install.

Tony

ROD1 · 11-19-2010, 02:00 PM

Quote:

Originally Posted by Nine Ball

Stock pulley is not keyed to the crank. Most blower kits come with a drill/ream/template/pin kit to install.

Tony

No blower kits for the V6. It would be nice if there was though.

Pt_killa · 11-21-2010, 11:34 AM

Thanks for the info nine ball.
I've been wondering if the crank should even have to be pinned since the kit won't be making too much power(aim 350-400rwhp tops) and the supercharger won't have to spin too fast. The only reason I asked was because I see the V8 vortech and procharger kits include a kit to key the crank. Any info or suggestions?

Pt_killa · 11-22-2010, 12:09 PM

I notice a couple of motors don't pin the crank on some factory supercharged vehicles. That is the only thing that is holding me up so far. Heres the latest pic of the setup I have :

Currently, the volute is not sticking up and the bracket and supercharger has been painted black. Also, I added an automatic tensioner. The supercharger will feed into a fmic.

ROD1 · 11-22-2010, 12:15 PM

Quote:

Originally Posted by Pt_killa

I notice a couple of motors don't pin the crank on some factory supercharged vehicles. That is the only thing that is holding me up so far. Heres the latest pic of the setup I have :

Currently, the volute is not sticking up and the bracket and supercharger has been painted black. Also, I added an automatic tensioner. The supercharger will feed into a fmic.

Pretty neat, is Trifecta tuning it?

GretchenGotGrowl · 11-22-2010, 12:26 PM

Quote:

Originally Posted by Pt_killa

I notice a couple of motors don't pin the crank on some factory supercharged vehicles. That is the only thing that is holding me up so far. Heres the latest pic of the setup I have :

Currently, the volute is not sticking up and the bracket and supercharger has been painted black. Also, I added an automatic tensioner. The supercharger will feed into a fmic.

Sweet. I would still pin it. Have you checked with performance shops in your area to see if they can do it?

Pt_killa · 11-22-2010, 12:44 PM

Vince at Trifecta said he can do it. Shouldn't be too hard to tune since the hp/tq rise linearly and most of the boost comes in at high rpms when the engine can handle it the most. I'm going to check with some shops in the area for pinning. I originally had the blower running off of a pulley attached to the water pump but if I'm going to pin the crank I'll be looking to create or buy a custom crank pulley as well. The blower ran fine off of the water pump but im pretty sure the bearings on the pump will give out faster than stock due to the increased stress. I know ATI sells a replacement balancer for our cars. I believe you can bolt a pulley on top of the balancer to drive the supercharger.

Demon Hunter · 11-22-2010, 01:22 PM

Can't wait to see how this one turns out....

Mach · 11-22-2010, 01:52 PM

Looks great.. Keep it up!!! Cannot wait to see a SC run our v6's.

GretchenGotGrowl · 11-22-2010, 04:47 PM

Post dyno and track times when you get them.

Pt_killa · 11-30-2010, 01:49 PM

Does anyone know if the LY7 engine is pinned? In one of the earlier FI thread "Capa Supercharger Install Manual", Capa does not have the owner pin the crank when installing the vortech V2. I know our engines are similar and GM's part catalog does not reference any dowel pin or key for LY7 engines. I prefer not to tamper with the crank if I don't have to.

xx_ED_xx · 11-30-2010, 02:01 PM

I would highly suggest it. You also dont want the end of your crank snappping off either. If you can get me some good pictures of the pulley and then some good pictures of the end of the crank with the pulley off. I can give you some ideas. We double pinned them on the viper's.

ROD1 · 11-30-2010, 02:30 PM

Quote:

Originally Posted by Pt_killa

Does anyone know if the LY7 engine is pinned? In one of the earlier FI thread "Capa Supercharger Install Manual", Capa does not have the owner pin the crank when installing the vortech V2. I know our engines are similar and GM's part catalog does not reference any dowel pin or key for LY7 engines. I prefer not to tamper with the crank if I don't have to.

Killa, I think Nineball thought he was in the V8 section.

11-19-2010, 09:42 AM	#1
Pt_killa Drives: Black 2010 Camaro V6 Join Date: Apr 2010 Location: VA Posts: 465 View My Garage	Stock Crank Pulley Pinned??? I've been building a cheap centri supercharger kit on my own for the past couple of months using parts I already owned. I built the whole bracket and tensioner assembly and had it mounted and running with a belt but forgot to check if the stock crank pulley is keyed to the crank. I wanted to ask the members of camaro5 if they knew before I pulled the crank pulley bolt or assembly off to check.

11-19-2010, 10:03 AM	#2
Nine Ball Drives: 1969 & 2016 Camaro SS Join Date: Oct 2008 Location: Houston, TX Posts: 3,849	Stock pulley is not keyed to the crank. Most blower kits come with a drill/ream/template/pin kit to install. Tony __________________ Fquick.com/NineBall

11-22-2010, 01:22 PM	#9
Demon Hunter Drives: 2010 Black Camaro LT Join Date: Oct 2009 Location: So Cal Posts: 675 View My Garage	Can't wait to see how this one turns out.... __________________

11-22-2010, 01:52 PM	#10
Mach Drives: White M6 1LT RS Join Date: Mar 2010 Location: Canton, MI Posts: 1,676	Looks great.. Keep it up!!! Cannot wait to see a SC run our v6's. __________________ Pfadt Sway Bars - FE3 Suspension - Barton Shifter - IdealG's Clutch Master Cylinder - Trifecta - Vmax TB - Vararam Intake - MACE 25mm Insulator - Plenum Insulator - Ported/Gasket Matched Intake Manifold - Rx Catchcan - AAC DRL's - 4 Pack Aux Gauges - Steering Controls - AAC Afterburners - DIY Led Sidemarkers - ZL1 Front End Next mod: Done!

11-22-2010, 04:47 PM	#11
GretchenGotGrowl Drives: 11 F150 EB/13 Sonic RS/15 Z06 Join Date: Sep 2010 Location: Little Rock, AR Posts: 7,129 View My Garage	Post dyno and track times when you get them. __________________ New Ride -- 2015 Z06 2LZ (stock) -- Journal Old Ride -- 2012 Camaro 2LT/RS (647 RWHP & 726 RWTQ) -- Build Thread

11-21-2010, 11:34 AM	#4
Pt_killa Drives: Black 2010 Camaro V6 Join Date: Apr 2010 Location: VA Posts: 465 View My Garage	Thanks for the info nine ball. I've been wondering if the crank should even have to be pinned since the kit won't be making too much power(aim 350-400rwhp tops) and the supercharger won't have to spin too fast. The only reason I asked was because I see the V8 vortech and procharger kits include a kit to key the crank. Any info or suggestions?

11-22-2010, 12:09 PM	#5
Pt_killa Drives: Black 2010 Camaro V6 Join Date: Apr 2010 Location: VA Posts: 465 View My Garage	I notice a couple of motors don't pin the crank on some factory supercharged vehicles. That is the only thing that is holding me up so far. Heres the latest pic of the setup I have : Currently, the volute is not sticking up and the bracket and supercharger has been painted black. Also, I added an automatic tensioner. The supercharger will feed into a fmic.

11-22-2010, 12:44 PM	#8
Pt_killa Drives: Black 2010 Camaro V6 Join Date: Apr 2010 Location: VA Posts: 465 View My Garage	Vince at Trifecta said he can do it. Shouldn't be too hard to tune since the hp/tq rise linearly and most of the boost comes in at high rpms when the engine can handle it the most. I'm going to check with some shops in the area for pinning. I originally had the blower running off of a pulley attached to the water pump but if I'm going to pin the crank I'll be looking to create or buy a custom crank pulley as well. The blower ran fine off of the water pump but im pretty sure the bearings on the pump will give out faster than stock due to the increased stress. I know ATI sells a replacement balancer for our cars. I believe you can bolt a pulley on top of the balancer to drive the supercharger.

11-30-2010, 01:49 PM	#12
Pt_killa Drives: Black 2010 Camaro V6 Join Date: Apr 2010 Location: VA Posts: 465 View My Garage	Does anyone know if the LY7 engine is pinned? In one of the earlier FI thread "Capa Supercharger Install Manual", Capa does not have the owner pin the crank when installing the vortech V2. I know our engines are similar and GM's part catalog does not reference any dowel pin or key for LY7 engines. I prefer not to tamper with the crank if I don't have to.

11-30-2010, 02:01 PM	#13
xx_ED_xx Drives: 04 Silverado Join Date: Jun 2010 Location: Floriduh! Posts: 1,113	I would highly suggest it. You also dont want the end of your crank snappping off either. If you can get me some good pictures of the pulley and then some good pictures of the end of the crank with the pulley off. I can give you some ideas. We double pinned them on the viper's.

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