TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

Stock MAF Size / Measurements...

Thread Tools
 
Search this Thread
 
Old 04-08-2015, 03:50 PM
  #1  
TGO Supporter

Thread Starter
iTrader: (2)
 
luvofjah's Avatar
 
Join Date: Feb 2003
Location: PNW
Posts: 2,478
Received 13 Likes on 12 Posts
Car: 91 Black Formula KR
Engine: 305 TPI R69/G92
Transmission: Astro A5-Pro 5.0-McCleod
Axle/Gears: US Gear 3.42 Eaton True Trac
Stock MAF Size / Measurements...

I have a MAP TPI...
I bought an SLP Cold Air kit, and it came with MAF setup (2 intake tracts, minus MAF in the middle).
It seems this setup is smoother flowing than the MAP intake tract(which I don't have either).

The rubber openings where the MAF go seem, to be about 3 1/8" ID.

Can someone measure the OD on a MAF?
Then measure how long it is?

I plan to get a pipe / tube and just put it in between...

Thanks,

Rafael
Old 04-08-2015, 04:43 PM
  #2  
Supreme Member

iTrader: (8)
 
TTOP350's Avatar
 
Join Date: Oct 2001
Location: Il
Posts: 11,692
Received 746 Likes on 505 Posts
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Stock MAF Size / Measurements...

If you have a 91-2 car use the stock plastic tube. No power difference.
If you would like to sell/trade the rubber stuff for the correct 90-2 duct, I could do that as I have a MAF car that could use the rubber stuff.
Old 04-08-2015, 04:48 PM
  #3  
TGO Supporter

Thread Starter
iTrader: (2)
 
luvofjah's Avatar
 
Join Date: Feb 2003
Location: PNW
Posts: 2,478
Received 13 Likes on 12 Posts
Car: 91 Black Formula KR
Engine: 305 TPI R69/G92
Transmission: Astro A5-Pro 5.0-McCleod
Axle/Gears: US Gear 3.42 Eaton True Trac
Re: Stock MAF Size / Measurements...

I have a 92 setup (1 piece tract & rubber boot) on order... but it has various curves n goes from round to square to round...

Earlier style is smoother...

Thus why I need MAF measurements...
Old 04-08-2015, 05:07 PM
  #4  
Supreme Member

iTrader: (8)
 
TTOP350's Avatar
 
Join Date: Oct 2001
Location: Il
Posts: 11,692
Received 746 Likes on 505 Posts
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Stock MAF Size / Measurements...

I understand exactly what you are saying.
I'm telling you it doesn't matter, there is no power difference between the 2 setups. (actually the MAP cars got a 10hp bump over the MAF cars because of the maf/duct)
Unless you are over 600hp which you will go to a larger custom 3.5" or 4" tube anyway.

The MAF is 77mm ID and 3.15 OD
Old 04-08-2015, 05:18 PM
  #5  
TGO Supporter

Thread Starter
iTrader: (2)
 
luvofjah's Avatar
 
Join Date: Feb 2003
Location: PNW
Posts: 2,478
Received 13 Likes on 12 Posts
Car: 91 Black Formula KR
Engine: 305 TPI R69/G92
Transmission: Astro A5-Pro 5.0-McCleod
Axle/Gears: US Gear 3.42 Eaton True Trac
Re: Stock MAF Size / Measurements...

Thanks for the measurements...
Do you have the length of it, so I know what length of pipe to use?

And for clarification, you stated, "I'm telling you it doesn't matter, there is no power difference between the 2 setups. (actually the MAP cars got a 10hp bump over the MAF cars because of the maf/duct) "

So the MAP duct gains 10 hp, or just over all the MAP TPI's had 10hp more than MAF?

If my order doesn't come in, and I want to go the 92 route, I'll send you a PM... the SLP pieces I have (with the riveted veins inside) have never been used....

Rafael
Old 04-08-2015, 10:42 PM
  #6  
Supreme Member

iTrader: (8)
 
TTOP350's Avatar
 
Join Date: Oct 2001
Location: Il
Posts: 11,692
Received 746 Likes on 505 Posts
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Stock MAF Size / Measurements...

The SD cars had 10 more hp than the maf cars.
It was related to the duct work and maf setup.
Old 04-12-2015, 01:03 PM
  #7  
TGO Supporter

Thread Starter
iTrader: (2)
 
luvofjah's Avatar
 
Join Date: Feb 2003
Location: PNW
Posts: 2,478
Received 13 Likes on 12 Posts
Car: 91 Black Formula KR
Engine: 305 TPI R69/G92
Transmission: Astro A5-Pro 5.0-McCleod
Axle/Gears: US Gear 3.42 Eaton True Trac
Re: Stock MAF Size / Measurements...

Anyone have the length of the MAF ?
Old 04-12-2015, 01:26 PM
  #8  
Member

iTrader: (1)
 
z 28 jari's Avatar
 
Join Date: Dec 2001
Location: Finland
Posts: 456
Likes: 0
Received 2 Likes on 2 Posts
Car: 1985 Camaro Z-28
Engine: 385
Transmission: th700r4+Edge 2800 stall
Axle/Gears: 3.42
Re: Stock MAF Size / Measurements...

length 129.3mm
Old 04-12-2015, 01:49 PM
  #9  
TGO Supporter

Thread Starter
iTrader: (2)
 
luvofjah's Avatar
 
Join Date: Feb 2003
Location: PNW
Posts: 2,478
Received 13 Likes on 12 Posts
Car: 91 Black Formula KR
Engine: 305 TPI R69/G92
Transmission: Astro A5-Pro 5.0-McCleod
Axle/Gears: US Gear 3.42 Eaton True Trac
Re: Stock MAF Size / Measurements...

Thanks!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
toronto formula
Engine/Drivetrain/Suspension Parts for Sale
15
11-10-2015 06:17 AM
bamaboy0323
Tech / General Engine
25
09-03-2015 06:07 AM
NBrehm
Engine/Drivetrain/Suspension Parts for Sale
1
08-25-2015 11:49 PM
knight72
Engine/Drivetrain/Suspension Wanted
0
08-10-2015 09:32 PM
jpearcy1
Wheels and Tires
5
08-09-2015 10:20 AM



Quick Reply: Stock MAF Size / Measurements...



All times are GMT -5. The time now is 04:49 AM.