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LPG Cam for Auto EB 

 

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 Post subject: LPG Cam for Auto EB
Posted: Sat Nov 26, 2005 11:43 am 
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hey guys, my situation is that i want a performance cam (willing to sacrifice some idle quality and economy) for my EBII I6 Auto on LPG and i've looked at all the camshaft threads i can find on here but none really answer some questions i have:

1. i emailed wade and they recommened the 1636 and say that it will suit both petrol and LPG but i dont want/need one for petrol, i want it optimised for LPG. whats ur opinion/experience on this cam for an LPG engine?

2. what are the GRA voodoo camshaft's like? they are called stage 1 which makes me think that its not much better than a stock cam but rather it just makes better use of LPG. anyone care to tell me otherwise?

i've found the following cams:

Crow Cams (2222549)
GRA Voodoo (CAM-VS1-4LT)
Wade Cams (1604 or 1636)
Sure Cams (OXY48)
Tighe Cams (826)
JMM Cam (DEV3HL)

but more (ie. all bar the voodoo) are made for petrol. any suggestions or help is much appreciated 8-)

 

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Posted: Sat Nov 26, 2005 3:00 pm 
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ask Keith at wade to give you the 1636 with a earlier opening on the exhaust .. that'll sort you out

otherwise, contact Joe from CMS on sales@crescentmotorsports.com and get one from him
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Posted: Sat Nov 26, 2005 3:52 pm 
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thanks fuzion. will Keith know what specs to set the exhaust at or do i need to tell him what to set it at?

 

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EBII 4.0L GLi | T5 | 3.27 Spool | POD | KKK K27 Turbo | 600x300x76 FMIC | 40mm Wastegate (dead) | RPD Stg1 Cam | B&M Launch Control | Thermos | 3" Dump | Twin 2.25" Zorst | 197kw@3500rpm, 7psi LEAN!

To Come: Hydraulic Handbrake | Coilover Springs | Fuel Pump | Microtech MT8 | 455cc Injectors

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Posted: Sat Nov 26, 2005 6:11 pm 
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he should know, as i said if not ask joe as joe knows specifics an dsome good lpg cams
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Posted: Thu Dec 01, 2005 9:37 am 
Getting Side Ways
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fuzion wrote:
ask Keith at wade to give you the 1636 with a earlier opening on the exhaust .. that'll sort you out

otherwise, contact Joe from CMS on sales@crescentmotorsports.com and get one from him


are you sure that it need an earlier exhaust? because i've made up this wonderful :roll: chart and it looks like the voodoo (the only actual gas cam on there) has a normal-ish exhaust but later and shorter intake... feel free to correct me if i'm wrong :?:

 

 

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EBII 4.0L GLi | T5 | 3.27 Spool | POD | KKK K27 Turbo | 600x300x76 FMIC | 40mm Wastegate (dead) | RPD Stg1 Cam | B&M Launch Control | Thermos | 3" Dump | Twin 2.25" Zorst | 197kw@3500rpm, 7psi LEAN!

To Come: Hydraulic Handbrake | Coilover Springs | Fuel Pump | Microtech MT8 | 455cc Injectors

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Posted: Thu Dec 01, 2005 10:22 am 
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I thought LPG cam needed longer intake duration?

 

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Posted: Thu Dec 01, 2005 12:54 pm 
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twr7cx wrote:
I thought LPG cam needed longer intake duration?


thats pretty much my thoughts as well.

using less intake would cause an even further drop in topend power over the stock on gas.
the gas takes up more space in the port and allows less air for a given throttle position and valve lift.
one would asume you would have more intake on an LPG cam with a similar exhaust. because once burnt it's no different to to petrol..

 

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