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el/ef intake for turbo 

 

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 Post subject: el/ef intake for turbo
Posted: Thu Jun 09, 2005 6:14 pm 
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strange question with el/efs they have the BBM intake now if we walk down the turbo path is it better to use a eb/ed intake? that question's been on my mind for a while.
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Posted: Thu Jun 09, 2005 8:41 pm 
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would be shorter intake piping.
which would be a benefit.

 

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Posted: Thu Jun 09, 2005 11:04 pm 
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Or use lower and fabricate a short inlet upper facing i/c ???
But thats for over 300 rwkw's...

 

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Posted: Thu Jun 09, 2005 11:57 pm 
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Yeah, the ideal way would be as EBXR8380 mentioned, If your after an easy bolt on just use an EB ED one. You can still use the EL one, plenty of guys have got good power using them, just dont use the variable runners. I like the EL manifold for it centre throttle body, which is much better for achieving a more even filling of each cylinder compared to the older EB ED design which can run some cyls leaner than the others
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Posted: Fri Jun 10, 2005 1:22 am 
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What do you mean by not using the variable runners CHEF?

 

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Posted: Fri Jun 10, 2005 1:43 am 
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i've heard of some cylinders running lean with the EF/EL manifold aswell.
by not using the variable runners, he means you can either leave the butterfly's open, or remove them all together.
thus having both short and long runners open all the time for air to flow.


i wouldn't bother changing it unless you're going to a custom plenum

 

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Posted: Fri Jun 10, 2005 1:12 pm 
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Thanks for that i was looking at it just for easy of plumbing for just a basic setup
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Posted: Fri Jun 10, 2005 1:47 pm 
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EBXR8380 wrote:

Its nearly IMPOSIBLE for cylinders to lean out as fuel is directly pushed into each cylinder..Remember where fuel injectors are ???


you said nearly.
it does happen...
if one cylinders not getting as much air as another, then another cylinder is getting more.
its generally a high boost pressure issue.

 

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Posted: Fri Jun 10, 2005 1:48 pm 
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i've heard of some cylinders running lean with the EF/EL manifold aswell.
by not using the variable runners, he means you can either leave the butterfly's open, or remove them all together.
thus having both short and long runners open all the time for air to flow.


i wouldn't bother changing it unless you're going to a custom plenum

 

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Posted: Fri Jun 10, 2005 2:06 pm 
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Yes they get more air but a good tunner fixes that!!Thats what after market ecu's are all about...It happens on most n/a inlets converted....

 

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331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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Posted: Fri Jun 10, 2005 2:11 pm 
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EBXR8380 wrote:
Yes they get more air but a good tunner fixes that!!Thats what after market ecu's are all about...It happens on most n/a inlets converted....


Done with either exhaust temp sensers or inividual wide band ....

 

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As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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Posted: Fri Jun 10, 2005 2:30 pm 
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EFFalcon wrote:
i've heard of some cylinders running lean with the EF/EL manifold aswell.
by not using the variable runners, he means you can either leave the butterfly's open, or remove them all together.
thus having both short and long runners open all the time for air to flow.


i wouldn't bother changing it unless you're going to a custom plenum


Its nearly IMPOSIBLE for cylinders to lean out as fuel is directly pushed into each cylinder..Remember where fuel injectors are ???

 

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As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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Posted: Fri Jun 10, 2005 2:39 pm 
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While it sounds impossible, something happens when you add boost as cylinders 3 and 4 on turbo cars with ED inlets tend to go lean

 

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Posted: Fri Jun 10, 2005 6:23 pm 
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so it's most likly better to stick with the standered bbm intake with out the butterflys and just run a longer cooler pipe?
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Posted: Fri Jun 10, 2005 7:04 pm 
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Yes, i belive the BA XR6T runs no butterflies

 

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