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Help with modding EA Engine only 

 

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 Post subject: Help with modding EA Engine only
Posted: Tue May 09, 2006 1:45 pm 
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Hey all

I have an EA engine that I need to get some more horse power out of. But I am restricted by a few rules like:
=< 10:1 comp
2 barrel carb....no injection
can only use OEM manifolds

What i am thinking of doing to is:
- Using ef/el xr6 tickford head, cam
- Have some dencko? pistons available at a mates place..

The engine is for Stockcar (full contact racing).
Any other tips is gladly appreciated. I am trying to do this on a tight budget...LOL

 

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Last edited by H82BL8 on Tue May 09, 2006 2:39 pm, edited 1 time in total.

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Posted: Tue May 09, 2006 2:12 pm 
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would u like a MPFI conversion? i have an EA conversion kit that someone wants but hasnt replied so i might as well sell them to u....then again u are in NZ so its a bit of a problem :S

phong =P~

 

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Posted: Tue May 09, 2006 2:40 pm 
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phongus wrote:
would u like a MPFI conversion? i have an EA conversion kit that someone wants but hasnt replied so i might as well sell them to u....then again u are in NZ so its a bit of a problem :S

phong =P~
thanks but no thanks.

 

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Posted: Tue May 09, 2006 2:54 pm 
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your EA is fuel injected
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Posted: Tue May 09, 2006 3:00 pm 
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Ashman1985 wrote:
your EA is fuel injected
The motor is out of an EA orginally. It has a carb and manifold bolted on.

 

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Posted: Tue May 09, 2006 3:26 pm 
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It looks like a carby setup but it is centrally fuel injected into the throttle body via 2 huge a** injectors

 

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Posted: Tue May 09, 2006 6:23 pm 
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i reckon get a better cam than a stock XR one (unless it must be factory) and probably use a newer head to combat the cracking head/blowing head gasket problem with 3.9s

 

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Posted: Tue May 09, 2006 7:01 pm 
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why use a TICKFORD head? and not crack test the original, then port, polish and BLUE PRINT the head???

if you wanna compete in stockcar racing u dont f**k around....and you definately dont want to be the laughing stock on the track....

allright bro? now go get sum fish n chups

 

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Posted: Tue May 09, 2006 8:04 pm 
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im not certain if this would work but why not try a au vct head, ive heard it works in on ef\el's

 

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 Post subject: Re: Help with modding EA Engine only
Posted: Wed May 10, 2006 12:27 am 
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H82BL8 wrote:
Hey all

I have an EA engine that I need to get some more horse power out of. But I am restricted by a few rules like:
=< 10:1 comp
2 barrel carb....no injection
can only use OEM manifolds

What i am thinking of doing to is:
- Using ef/el xr6 tickford head, cam
- Have some dencko? pistons available at a mates place..

The engine is for Stockcar (full contact racing).
Any other tips is gladly appreciated. I am trying to do this on a tight budget...LOL


if your limited by the class rules, youd be better off getting a later model head, get it crack tested, skimmed (as it will lower the comp ration on a 3.9motor) ported, then get a cam ground up to suit (i dunno how well an EFI cam would go in a carbied motor) the extra cost of a tickford head/cam is not justified if your going to work it anyway

 

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Posted: Wed May 10, 2006 7:41 am 
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I was wanting to use an AU XR6 tickford engine. But in Christchurch the cost is quite dear. From other stockcar drivers the AU XR6 is quick for stockcars once gears and diff setup correctly.
EA 's where used alot and when done up are quite competive. Plus cheap motors. As long as I can bet the V6 holdens i will be happy :)

Most of the parts i mentioned early are available to me at no cost or very low cost. hence why i was asking how they would go.

Have attached a picture of a stockcar.

 

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Posted: Wed May 10, 2006 1:22 pm 
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if you can get em cheap then go for it,

 

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Posted: Wed May 10, 2006 1:59 pm 
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H82BL8 wrote:
Ashman1985 wrote:
your EA is fuel injected
The motor is out of an EA orginally. It has a carb and manifold bolted on.


The EA has 2 injectors, as mentioned before.

Its not carby.
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Posted: Thu May 11, 2006 5:36 pm 
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convert it to MPFI or BBM................ best thing you can do
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Posted: Thu May 11, 2006 5:59 pm 
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Southy wrote:
convert it to MPFI or BBM................ best thing you can do

All you guys missed the point.
Hes restricted by class rules!!!

H82BL8 wrote:
I have an EA engine that I need to get some more horse power out of. But I am restricted by a few rules like:
=< 10:1 comp
2 barrel carb....no injection
can only use OEM manifolds

Learn to read kids, hes not using the CFI!!!

I'd go the EF-EL XR head route if you dont want to do any work to the head, you just want to bolt it on and go.
If it's getting ported and what not, dont waste money on the Tickford, they have smaller port sizes to promote intake velocity (more work to port them!) and come with an oversize exhaust valve stock.
I'd also be talking to cam manufacturers, and find out what they can offer you in regards to a cam thats going to be suitable for the carby, id imagine a carby motor has completely different needs when it comes to camshafts...
thats where theres some gains over the competition to be made, with the cam.
edit: just read Jose's post... great minds think a like :P

 

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