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Engine New bigger throttle body

  • Thread starter Thread starter Scott7512
  • Start date Start date Nov 14, 2020
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General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
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polk county florida
Nov 29, 2020
#21
  • Nov 29, 2020
  • #21
Scott7512 said:
Checked idle maf voltage and it was good. Changes with increase in rpm. Did not check it per mph. It’s a pro-m unit with less than 5k miles on it.
Would a bad maf cause oil to be puddling just behind the the throttle body blade and coating the filter side of the blade?
Click to expand...
No
 

KRUISR

10 Year Member
Apr 16, 2015
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#22
  • Nov 29, 2020
  • #22
Excessive oil in throttle body (to me) would be blow by pressurizing the tube from oil filler to throttle body. With engine running and warmed up, open oil filler cap. Is vapor or air blowing out?
 
Reactions: General karthief

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,929
10,573
203
polk county florida
Nov 29, 2020
#23
  • Nov 29, 2020
  • #23
Pcv hooked up and functional
 

Dan02gt

mazing how much gas smell came from that tiny hole
20+ Year Stangneter
Mar 2, 2003
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Greenville, NC
Nov 29, 2020
#24
  • Nov 29, 2020
  • #24
Maybe I missed it, but do you still have the code 66 for the MAF?
 

Scott7512

Active Member
May 19, 2015
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Branchland WV
Nov 30, 2020
#25
  • Nov 30, 2020
  • #25
Code 66 is gone. It has not showed back up the last few times I pulled codes.
I plugged the hose fitting on the filler neck and it did build up some pressure. I have since then tie wrapped a price of cloth over it and it has not gotten oiled.
Pcv was replaced with the new heads and intake. I pulled the pcv and it’s hoses off to check for excessive oil and there was none.
As far as excessive blow by, there was no oil on the previous throttle blade or laying in the explorer intake.
I am petty sure that the small cone air filter was able to handle the airflow of the explorer heads and intake but can’t handle the new afr heads and performer intake and 70mm throttle body.
The existing air filter is a cone type that’s 4 1/2 inch round at the base and 3 1/2 at the top. It is 4 1/2 inch tall. It came with the sve cold air kit.
 

Dan02gt

mazing how much gas smell came from that tiny hole
20+ Year Stangneter
Mar 2, 2003
909
415
113
Greenville, NC
Nov 30, 2020
#26
  • Nov 30, 2020
  • #26
If you can go back to the stock air box. It works really well. LMR sells reproductions.
 

KRUISR

10 Year Member
Apr 16, 2015
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#27
  • Nov 30, 2020
  • #27
Scott7512 said:
I am petty sure that the small cone air filter was able to handle the airflow of the explorer heads and intake but can’t handle the new afr heads and performer intake and 70mm throttle body.
Click to expand...
Don't forget, a 302 cubic inch motor will only pull 525 cfm at 6000 rpm. It doesn't matter what heads, intake or throttle body, it can not pull more than that (it is just math). It can pull less if there are restrictions or rpm will be limited with restrictions. By upgrading to larger units you can't put more than that into the engine (without a blower of some kind).

Saying that I think the filter you gave the dimensions of should work fine from an airflow standpoint.

Having massive MAF's and TB's that can flow 1000-1200+ cfm on a 302 motor are just overkill that will likely hurt performance (unless you are spinning the motor to 10,000 rpm).
 

Scott7512

Active Member
May 19, 2015
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Branchland WV
Dec 1, 2020
#28
  • Dec 1, 2020
  • #28
New filter will be in tomorrow. I am going to connect the filler neck hose back up and give it another test run when this snow clears out.
I will post the results.
 
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