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Joined: Apr 2006
Posts: 19
New CEG\'er
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OP
New CEG\'er
Joined: Apr 2006
Posts: 19 |
I had oversized valves put in my head, and if the exhaust and intake valves are open at the same time they can touch. So, I'm wondering if the VCT retarding could allow the valves to come too close.
If I want to check clearances, how many degrees does the VCT retard the exhaust cam?
'99 Turbocharged Cougar, Built motor in progress
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Joined: Aug 2002
Posts: 1,224
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Aug 2002
Posts: 1,224 |
Good question.
Something to consider... You really don't want any overlap in a tuborcharged application. Why not just get a VCT eliminator?
BP
Ben ---'96 Contour GL * Zetec ATX * Tan on Black steelies---
+++JRSC M62 Under Construction+++
My big-a$$ mod list. 
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Joined: Apr 2006
Posts: 19
New CEG\'er
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OP
New CEG\'er
Joined: Apr 2006
Posts: 19 |
I thought that under WOT the VCT would not be activated, but if that is not the case someone please let me know.
'99 Turbocharged Cougar, Built motor in progress
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Joined: Aug 2001
Posts: 17,248
CEG road warrior
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CEG road warrior
Joined: Aug 2001
Posts: 17,248 |
Only at deceleration the VCT is activated.
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ
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Joined: Jul 2005
Posts: 1,687
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Jul 2005
Posts: 1,687 |
I don't know why people even mess with that retarded VCT motor. '97 Silvertop owns you. 
J.T.
2002 Chevrolet Silverado 294ci V8. Custom CAI, headers on the way...
1997 Mercury Mystique Zetec ATX
Deceased February 2006
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Joined: Apr 2006
Posts: 19
New CEG\'er
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OP
New CEG\'er
Joined: Apr 2006
Posts: 19 |
By "Owns" are you referring to the hydraulic lifters that require oil pressure?
'99 Turbocharged Cougar, Built motor in progress
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Joined: Aug 2002
Posts: 1,224
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Aug 2002
Posts: 1,224 |
Again... Why not eliminate it?
VCT is just emissions crap and not performance.
I'm guessing that VCT will also hurt your spool time. It is letting pressure back into the cylinders instead of feeding your turbo.
BP
Ben ---'96 Contour GL * Zetec ATX * Tan on Black steelies---
+++JRSC M62 Under Construction+++
My big-a$$ mod list.
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Joined: Aug 2001
Posts: 17,248
CEG road warrior
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CEG road warrior
Joined: Aug 2001
Posts: 17,248 |
Originally posted by ButtonPuncher:
Again... Why not eliminate it?
VCT is just emissions crap and not performance.
I'm guessing that VCT will also hurt your spool time. It is letting pressure back into the cylinders instead of feeding your turbo.
BP
VCT effects performance when not working correctly. 
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ
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Joined: Jul 2001
Posts: 439
CEG\'er
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CEG\'er
Joined: Jul 2001
Posts: 439 |
Originally posted by cbman:
By "Owns" are you referring to the hydraulic lifters that require oil pressure?
Are you refering to those lifters that can be easily swapped for focus solid lifters/shims and outfitted with Focus performance cams/cam gears?
Ohsigmachi '96 GL MTX Zetec
--I don't won't to hurt you, but it's still on my list of things to do.--
View project Slippery Slope
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