Has anyone with a ea82 put the cams from a turbo engine in a non turbo engine? I have a cracked head and I was thinking if i'm going to replace them I might as well see about getting a little more power. Thanks!!
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Guest Message by DevFuse
Turbo cams
Started by
wiggles
, Sep 12 2004 06:08 AM
6 replies to this topic
#2
calebz
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- Administrator
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Andys Coupe killed my cat
- Tacoma
Posted 12 September 2004 - 09:36 AM
I don't think there would be a whole lot of advantage in using the turbo ams on an NA motor.. They aren't really 'bigger' or ' more powerful' , they are simply ground for minimal valve overlap as is appropriate for a turbo motor.
If youj want better cams, look up delta cams in Tacoma.
Also, the wording of your post suggests that one must replace cams while replacing a cracked head. That is not the case. The cams are in their own self contained cam case seperate from the head.
If youj want better cams, look up delta cams in Tacoma.
Also, the wording of your post suggests that one must replace cams while replacing a cracked head. That is not the case. The cams are in their own self contained cam case seperate from the head.
#3
RallyKeith
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Posted 12 September 2004 - 08:30 PM
Turbo cams in a Non-Turbo engine gives you less power. Let me give you some background.
A normally aspirated engine works on a Scavanging effect. What happens, is that as the piston is being pushed up to let the exhaust gas out, the moment before the piston reaches the top, the intake valve opens. This is what's called overlap. What happens is that the air rushing out of the exhaust valve acts like a vaccum and pulls the fresh air in from the intake valve, thus allowing more fresh air in for combustion and more power.
In a turbo car you are forcing the air into the cylinder chamber. So, as the piston is moving up and pushing the exhaust out of the open exhast valve you don't want to open the intake valve. If opened the intake before the exhaust valve was closed all the turbo boost pressure would blow through and you would lose pressure. That's why turbo cars feel so dead before the turbo comes on. Their cams are ground with little to no overlap, so until the boost comes up they don't get the scavanging effect and therfore less clean air to burn, less power.
So putting a turbo cam into a non-turbo car would give you noticabaly less power.
Like calebz said, delta cams are the way to go.
http://www.deltacam.com/
Keith
A normally aspirated engine works on a Scavanging effect. What happens, is that as the piston is being pushed up to let the exhaust gas out, the moment before the piston reaches the top, the intake valve opens. This is what's called overlap. What happens is that the air rushing out of the exhaust valve acts like a vaccum and pulls the fresh air in from the intake valve, thus allowing more fresh air in for combustion and more power.
In a turbo car you are forcing the air into the cylinder chamber. So, as the piston is moving up and pushing the exhaust out of the open exhast valve you don't want to open the intake valve. If opened the intake before the exhaust valve was closed all the turbo boost pressure would blow through and you would lose pressure. That's why turbo cars feel so dead before the turbo comes on. Their cams are ground with little to no overlap, so until the boost comes up they don't get the scavanging effect and therfore less clean air to burn, less power.
So putting a turbo cam into a non-turbo car would give you noticabaly less power.
Like calebz said, delta cams are the way to go.
http://www.deltacam.com/
Keith
#4
GLCraig
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Posted 12 September 2004 - 08:35 PM
you guys are forgetting something. the ea82t and Ea82 Carb use the same cam, well atleast they do for 85-86
#5
calebz
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Andys Coupe killed my cat
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Posted 13 September 2004 - 03:56 AM
you guys are forgetting something. the ea82t and Ea82 Carb use the same cam, well atleast they do for 85-86
87+ are different
#6
wiggles
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Posted 14 September 2004 - 02:14 AM
Where is a good source for cyl heads online?
#7
calebz
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Andys Coupe killed my cat
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Posted 14 September 2004 - 03:10 AM
Where is a good source for cyl heads online?
You're here.
Post a WTB in the market place..
Or try CCR in denver.
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