[ZR1] Got her baaaaack
04-25-2012, 10:02 PM
#41
From Lingenfelter you will need the 2.35 pulley, hub, 75mm idler pulley, and the solid isolator coupler, and a new gatorback belt from them. So you are looking at about $450 in parts.
However it is rather labor intensive because you need to remove the blower snout. Lingenfelter lists a PDF on their site and its 40 pages. The gist of it is you lower the motor a few inches so you can pull the intercooler off and then the blower off. Then the snout comes off and you use a pulley puller to pull the old pulley off. Afterwards you need to machine/dremel down the nose of the snout so the new pulley can clear. You have to press on the new hub. Then drill a hole into the hub and into the shaft of the supercharger thats passing though the snout so you can pin it. Then its time to reassemble everything.
LPE is saying headers aren't needed at these boost levels. They are saying that you will lose boost pressure and basically make the same power. Thats part of the reason I have not gone ahead and done headers yet. I'll be doing a cam probably in June and then we will test an A-B on removing the cats. Basically that will open up flow a lot and will tell us if I need headers or not.
I have to say I agree with what LPE says about losing boost however with that being said you wont lose power. Boost is a measure of restriction to a point. The headers allow the blower to be more efficient. Think about this. We add a smaller pulley to make the blower spin faster i.e. move more air, which requires more fuel. Which in turn means more power. Weather you have headers or no headers or you have 16 lbs of boost or 14 lbs due to the install of the headers the blower is still moving the same amount of air because of the smaller pulley. Check out the East Coast Supercharging web page and read the article they did on a ZR1 build. Very informative. Long story short if you dont want to read it is with 2.6 upper 14% OD crank pulley (which almost equates to just a 2.35 upper alone) 1"7/8 headers and a ported snout made 722 RWHP on 93 octane. They also explain the debate of "losing boost" with headers. More efficient doesn't equate to loss of power just lower boost readings.
Whine about being slow
However it is rather labor intensive because you need to remove the blower snout. Lingenfelter lists a PDF on their site and its 40 pages. The gist of it is you lower the motor a few inches so you can pull the intercooler off and then the blower off. Then the snout comes off and you use a pulley puller to pull the old pulley off. Afterwards you need to machine/dremel down the nose of the snout so the new pulley can clear. You have to press on the new hub. Then drill a hole into the hub and into the shaft of the supercharger thats passing though the snout so you can pin it. Then its time to reassemble everything.
LPE is saying headers aren't needed at these boost levels. They are saying that you will lose boost pressure and basically make the same power. Thats part of the reason I have not gone ahead and done headers yet. I'll be doing a cam probably in June and then we will test an A-B on removing the cats. Basically that will open up flow a lot and will tell us if I need headers or not.
I have to say I agree with what LPE says about losing boost however with that being said you wont lose power. Boost is a measure of restriction to a point. The headers allow the blower to be more efficient. Think about this. We add a smaller pulley to make the blower spin faster i.e. move more air, which requires more fuel. Which in turn means more power. Weather you have headers or no headers or you have 16 lbs of boost or 14 lbs due to the install of the headers the blower is still moving the same amount of air because of the smaller pulley. Check out the East Coast Supercharging web page and read the article they did on a ZR1 build. Very informative. Long story short if you dont want to read it is with 2.6 upper 14% OD crank pulley (which almost equates to just a 2.35 upper alone) 1"7/8 headers and a ported snout made 722 RWHP on 93 octane. They also explain the debate of "losing boost" with headers. More efficient doesn't equate to loss of power just lower boost readings.
Whine about being slow
04-25-2012, 10:10 PM
#42
Pro
04-25-2012, 10:32 PM
#43
Heel & Toe
Member Since: Apr 2012
Location: Morgan Hill Ca
Posts: 21
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I will have to scope out a reputable corvette shop in the bay area in CA, so when I'm ready, I can move forward.
Last edited by AceM8kr; 04-25-2012 at 10:35 PM.
04-26-2012, 10:32 AM
#44
Melting Slicks
04-26-2012, 11:30 AM
#45
Le Mans Master
Thread Starter
04-26-2012, 11:41 AM
#46
Melting Slicks
I am going to PM you my number and we can talk 
We also have some difference in mods so yes it will be intereesting also my car should be cold I may jsut have it towed up to the shop.
We also have some difference in mods so yes it will be intereesting also my car should be cold I may jsut have it towed up to the shop.
Last edited by narush; 04-26-2012 at 11:48 AM.
04-26-2012, 02:59 PM
#48
Le Mans Master
Thread Starter
A 15% drivetrain loss would put the car at 542 stock. I'm a little under that at 535 but keep in mind it wasn't done as an ideal pull. It was slightly warm and no fan in front of the car. Then keep in mind the ZR1 has a much beefier clutch system so there is more drivetrain loss compared to the Z06.
04-26-2012, 06:18 PM
#50
Melting Slicks
04-26-2012, 08:05 PM
#51
Melting Slicks
All mods are installed. Just had to have injectors installed then next week I will have it tuned. I am hoping car runs good with 80 injectors and no tune. If it acts up I will just tow it to the tuner he is only an hour drive from me.
Sorry to hear how they mistreated you and wish you could sue the business right from them for it.
Can't wait to get your cooler either just saying
:-)
Sorry to hear how they mistreated you and wish you could sue the business right from them for it.
Can't wait to get your cooler either just saying
:-)
Last edited by narush; 04-26-2012 at 08:10 PM.
04-26-2012, 08:38 PM
#52
Le Mans Master
Thread Starter
04-26-2012, 08:53 PM
#53
All mods are installed. Just had to have injectors installed then next week I will have it tuned. I am hoping car runs good with 80 injectors and no tune. If it acts up I will just tow it to the tuner he is only an hour drive from me.
Sorry to hear how they mistreated you and wish you could sue the business right from them for it.
Can't wait to get your cooler either just saying
:-)
Sorry to hear how they mistreated you and wish you could sue the business right from them for it.
Can't wait to get your cooler either just saying
:-)
Probably seeing as how my tune is toned down quite a bit.
04-27-2012, 01:55 AM
#55
Safety Car
http://www.synergymotorsports.net/
this just sounds so awesome
congrats on the results must feel crazy
04-27-2012, 06:18 AM
#56
Melting Slicks
04-27-2012, 06:19 AM
#57
Melting Slicks
04-27-2012, 10:33 AM
#58
Heel & Toe
Member Since: Apr 2012
Location: Morgan Hill Ca
Posts: 21
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Go to Synergy Motorsports in Fremont, CA he's the most reputable tuning shop in Nor Cal.
http://www.synergymotorsports.net/
this just sounds so awesome congrats on the results must feel crazy
http://www.synergymotorsports.net/
this just sounds so awesome
congrats on the results must feel crazy
04-27-2012, 07:05 PM
#60
Melting Slicks
All mods are installed. Just had to have injectors installed then next week I will have it tuned. I am hoping car runs good with 80 injectors and no tune. If it acts up I will just tow it to the tuner he is only an hour drive from me.
Sorry to hear how they mistreated you and wish you could sue the business right from them for it.
Can't wait to get your cooler either just saying
:-)
Sorry to hear how they mistreated you and wish you could sue the business right from them for it.
Can't wait to get your cooler either just saying
:-)
I will call Taylor Monday to see where we at to see when I can get the cooler to you