Engine and Transmission Tech

tips, technology, tools and techniques related to vehicle driveline components

Go to Thread: PreviousNext
Go to: Forum ListMessage ListNew TopicLog In


motek
George Smathers
Spokane, WA
(118 posts)

Registered:
09/12/2009 02:45PM

Main British Car:
1967 Morris Minor (48 hp @ crank!), 1971 TR6 302

Opinion on Carb hats/bonnets
Posted by: motek
Date: May 27, 2010 10:06PM

What do you guys think about using a carb hat? Like this one used by Jeb Blanchard. I have hood clearance issues and I'd like to avoid a hood scoop on my 302 TR6.


Thanks,

George
Carb bonnet.jpg


castlesid
Kevin Jackson
Sidcup UK
(361 posts)

Registered:
11/18/2007 10:38AM

Main British Car:
1975 MGB GT Rover V8 4.35L

Re: Opinion on Carb hats/bonnets
Posted by: castlesid
Date: May 29, 2010 03:28PM

George,

The problem is that if you do not have room say for a 14" x 2" with a drop base of 1 1/2" then you more than likely won't have room for a carb hat which in the centre will be approx 1 1/2" higher than the drop base filter.

If anyone makes a carb hat with a drop base and is no larger than 6" diameter then I would like to know as that would fit under my MGRV8 bonnet/hood otherwise it's a make it yourself situation.

Kevin


motek
George Smathers
Spokane, WA
(118 posts)

Registered:
09/12/2009 02:45PM

Main British Car:
1967 Morris Minor (48 hp @ crank!), 1971 TR6 302

Re: Opinion on Carb hats/bonnets
Posted by: motek
Date: May 29, 2010 05:03PM

Thanks Kevin. I realize it will still stick up but I thought it might allow me to get away with a small diameter closed bubble - like on a TR4 - rather than a big open scoop.


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Opinion on Carb hats/bonnets
Posted by: roverman
Date: May 29, 2010 06:04PM

Webbers/DelOrtto's on a Offy etc. adapter to 4 bbl man. ? Side-ways better than no-ways, roverman.


britcars
Phil Ossinger
New Brunswick, Canada
(346 posts)

Registered:
02/02/2009 07:58PM

Main British Car:
1977 MGB Roadster, Rover 3.5 ADVENTURE BEFORE DEMENTIA!

authors avatar
Re: Opinion on Carb hats/bonnets
Posted by: britcars
Date: May 29, 2010 09:44PM

Here's my solution in an MGB with a Rover 3.5. The aluminum can contains a Wix industrial air filter and draws cool air from in front of the radiator panel.


P1020444 (450 x 600).jpg


britcars
Phil Ossinger
New Brunswick, Canada
(346 posts)

Registered:
02/02/2009 07:58PM

Main British Car:
1977 MGB Roadster, Rover 3.5 ADVENTURE BEFORE DEMENTIA!

authors avatar
Re: Opinion on Carb hats/bonnets
Posted by: britcars
Date: May 29, 2010 09:46PM

A better view..................
P1020442 (442 x 600).jpg



Edited 1 time(s). Last edit at 05/29/2010 09:47PM by britcars.


Moderator
Curtis Jacobson
Portland Oregon
(4576 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Opinion on Carb hats/bonnets
Posted by: Moderator
Date: May 29, 2010 10:15PM

I've never had any particular problems with this carb hat / remote filter / cowl induction arrangement:

http://www.britishv8.org/MG/CurtisJacobson/CurtisJacobson-BE.jpg

Possibly a more streamlined path into the carb throat (and/or a bigger diameter for more plenum volume) would help it perform even better.



jblanchard@hcpg.net
Jeb Blanchard
Collierville, TN
(53 posts)

Registered:
12/07/2007 01:01PM

Main British Car:
1961 MGA Chevy 4.3 Vortec V-6

authors avatar
Re: Opinion on Carb hats/bonnets
Posted by: jblanchard@hcpg.net
Date: May 29, 2010 11:02PM

George,

After investigating all options, the set up for my car was the only one that worked given hood clearances and working space. The design works just fine...

Good luck on your project!

Jeb Blanchard


eyeosteverino
Steve Kimball
Southwest NM
(30 posts)

Registered:
03/02/2008 10:58AM

Main British Car:
67 Sunbeam, 2.8 L V6 Ford,

Re: Opinion on Carb hats/bonnets
Posted by: eyeosteverino
Date: June 05, 2010 03:29PM

It's hard to beat stock air cleaners, hood clearance wise. I modified a Yugo unit to fit the top of a Weber DGV and with some scrap tubes, made this cowl induction set-up. Since paper filters are kind of hard to find,I splurged on a K-N.
MGB Mouse Rod Air Cleaner Induction 001.jpg
MGB Mouse Rod Air Cleaner Induction 002.jpg


motek
George Smathers
Spokane, WA
(118 posts)

Registered:
09/12/2009 02:45PM

Main British Car:
1967 Morris Minor (48 hp @ crank!), 1971 TR6 302

Re: Opinion on Carb hats/bonnets
Posted by: motek
Date: June 21, 2010 02:02PM

To avoid dropping my oil pan below the front cross member my engine is mounted a little high. I think I'll just bite the bullet and put in a hood scoop.

George


383 TR7
Jeffrey Frismanis
Minnesota
(6 posts)

Registered:
06/14/2010 07:35AM

Main British Car:
1976 TR7 convert. 383 sm blk Chev.

Re: Opinion on Carb hats/bonnets
Posted by: 383 TR7
Date: June 23, 2010 08:12AM

Before you go cutting your hood check out Spectre Performance. They have all kinds of different low profile carb hats and plenums. The website has some expensive prices, but if you figure out what will fit try searching for it on Ebay.

Cut and paste this link

[spectreperformance.com]


383 TR7
Jeffrey Frismanis
Minnesota
(6 posts)

Registered:
06/14/2010 07:35AM

Main British Car:
1976 TR7 convert. 383 sm blk Chev.

Re: Opinion on Carb hats/bonnets
Posted by: 383 TR7
Date: June 23, 2010 08:16AM

Here's what I'm planning on running from Spectre.


t350_a8eef9204a8451457b2d71e2b8107da6.jpg


Sorry, only registered users may post in this forum.