WCCH heads
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Heel & Toe
Joined: Jun 2016
Posts: 19
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WCCH heads
I'm looking at a local C6 Z06 with WCCH stage 2 heads with cam specs .678 int/.680 exh with .239/.241 duration@114 degrees, with 15K miles on this set up. When or if should the valve train be inspected? Assuming it is running well with this mileage do you leave it or check it?
Thanks
Thanks
Melting Slicks
Joined: Aug 2011
Posts: 2,097
Likes: 81
From: Frankfort,IL
I'm looking at a local C6 Z06 with WCCH stage 2 heads with cam specs .678 int/.680 exh with .239/.241 duration@114 degrees, with 15K miles on this set up. When or if should the valve train be inspected? Assuming it is running well with this mileage do you leave it or check it?
Thanks
Thanks
Racer
Joined: Jan 2015
Posts: 375
Likes: 31
From: San Antonio TX
I'm looking at a local C6 Z06 with WCCH stage 2 heads with cam specs .678 int/.680 exh with .239/.241 duration@114 degrees, with 15K miles on this set up. When or if should the valve train be inspected? Assuming it is running well with this mileage do you leave it or check it?
Thanks
Thanks
http://www.racingsprings.com/RPM-Ser...prings/sku/168
KW
Melting Slicks
Joined: Mar 2016
Posts: 2,211
Likes: 237
From: Indianapolis IN
My WCCH heads had 6k miles on them when I checked them out. Dual springs were 20lbs weak and guides were worn well beyond spec with less lift. .653"/.652"
Melting Slicks
Joined: Aug 2011
Posts: 2,097
Likes: 81
From: Frankfort,IL
wonderful, guess Katech was right about the guide material and the coating on the valves. Are your cam specs higher than any of Katech's cams? Why do you think your springs were weak?
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Safety Car
Joined: May 2006
Posts: 3,696
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From: Potomac MD
I think the Katech K501 and the torquer cam on the exhaust side have lifts in the 650 area. The duration on the K501 is like 239 / 251 and the torque is like 220 / 244. Now the Katechs run less spring pressure with a single beehive I think. What was the spring pressure on the User Omega springs?
Melting Slicks
Joined: Mar 2016
Posts: 2,211
Likes: 237
From: Indianapolis IN
I cannot speak to why exactly springs loose pressure. That is probably a question better suited for someone who really knows their metallurgy.
I think the Katech K501 and the torquer cam on the exhaust side have lifts in the 650 area. The duration on the K501 is like 239 / 251 and the torque is like 220 / 244. Now the Katechs run less spring pressure with a single beehive I think. What was the spring pressure on the User Omega springs?
I would like to see the wipe on that for sure.
Melting Slicks
Joined: Mar 2016
Posts: 2,211
Likes: 237
From: Indianapolis IN
Lets just hope this moldstar90 guide material lives up to its name. In another 6-10k miles I will perform an on-car wiggle test to see if I feel like the heads need to come off for further inspect. I should have the car back together by the end of the month. Heads will be here tomorrow.
Melting Slicks
Joined: Aug 2011
Posts: 2,097
Likes: 81
From: Frankfort,IL
Lets just hope this moldstar90 guide material lives up to its name. In another 6-10k miles I will perform an on-car wiggle test to see if I feel like the heads need to come off for further inspect. I should have the car back together by the end of the month. Heads will be here tomorrow.
Supporting Vendor
Joined: Sep 2013
Posts: 3,099
Likes: 1,270
From: Harbor City California
Lets just hope this moldstar90 guide material lives up to its name. In another 6-10k miles I will perform an on-car wiggle test to see if I feel like the heads need to come off for further inspect. I should have the car back together by the end of the month. Heads will be here tomorrow.
Our Moldstar90 is the same material used in many F1 and Indy car heads.
Just checked the tacking for you and it looks like the heads are currently in Illinois and have an expected delivery date of 12/27.
Let us know if you need anything and thank you for your business!
http://www.americanheritageperformance.com/
Pro
Joined: Jan 2014
Posts: 590
Likes: 37
From: Austin TX
Ya that cam is super aggressive for a street setup. I would put a more streetable cam in her. Like everyone else said, anything about .600 lift is too aggressive for the valvetrain.
Last edited by KM177122; Dec 24, 2016 at 09:18 AM.
Melting Slicks
Joined: Mar 2016
Posts: 2,211
Likes: 237
From: Indianapolis IN
I started a new thread so everyone could check them out.
https://www.corvetteforum.com/forums...post1593728271
https://www.corvetteforum.com/forums...post1593728271