MGB Air filter

[DrEntropy]

Been running the MG with just the air horns, finally got one of the Red Line K&N knock-offs. Not a lot of clearance at the bottom edge though. Likely will swap it out for the screen style individual covers. Or add another shim under the left motor mount. Don't laugh at the Rube Goldberg throttle linkage arrangement! It's worked for decades.

 

[Grantura_MKI]

I use the short K&N. It has a single center fastener.
Mum about the linkage.

 

[DrEntropy]

I use the short K&N. It has a single center fastener.
Mum about the linkage.

Yep. The K&N's work on the Elans, but have the same clearance issue on the MG. Just want to keep "the big chunks" from being ingested with the B. As posted, I'll likely go with the individual trumpet covers for that.

That manifold was a home-brew using the spec's for the inlet in the "Special Tuning Manual" back in the mid-seventies when we couldn't get that stuff "over here." I never did make up the braces to the motor mounts, seemed excess to requirement as the street engines it went on weren't pressed into racing conditions.

 

[Joe Reed]

On a '78 with brake booster space is limited. I've used this one from EMPI for years....

 

[DrEntropy]

On a '78 with brake booster space is limited. I've used this one from EMPI for years....

With velocity stacks? This is a '65, no extra booster or suchlike. And your intake manifold looks to be a shorter, tighter radius too.

 

[Joe Reed]

No velocity stacks, although I've been considering putting stub stacks inside the filter.

Yes, it is the short manifold. the longer one used on the earlier cars won't work on the RB cars with the booster.

 

[Grantura_MKI]

As I have written before….you do not fit a weber without stacks!

 

[DrEntropy]

As I have written before….you do not fit a weber without stacks!

Or really, any side draft carb. SU's have a short, tapered ram effect "horn" built in to the standard air filter canisters. Short bolt-on trumpets are available.

The Zed-S units were post-emission control and have a poor induction system to start with, so intake flow was the least of the engineering concerns.

 

[DrEntropy]

No velocity stacks, although I've been considering putting stub stacks inside the filter.

Do that. Anything to "smooth out" airflow going into the throats helps efficiency.

John Passini's book is a great guide: Volume 2: Tuning Weber Carbs

Volume 1 is theory stuff, second one is more practical for getting on with running.

 

[Grantura_MKI]

 

[DrEntropy]

That's th' one. I've both volumes here, just haven't put my finger on 'em.

 

[Grantura_MKI]

I have the Haynes book as well….like you somewhere.

 

[DrEntropy]

The Haynes book is here, too. But it isn't nearly as helpful as Passini's. Just "pretty pictures".

 

[LarryK]

Mine are on the shelf in carb section.

 

[DrEntropy]

You are sooo organized, Larry!

Mine could just as likely be on a shelf between books on Thai cooking and "The Complete Works of Shakespeare."

No tellin' at this point.

 

[LarryK]

I took all car books out of wife's library so she would have more room. I have books on different drivers and different cars and club magazines on a shelf in a side room. Built a 4' wide , 8' tall bookcase in garage with six shelves and that is full of manuals. Mostly Jag, Rover, Triumph and mixed LBCs with last 2 bottom shelves 1939- 1989. Flat rate manuals from 1939- 1984 are on the desk. The manuals are the only things I can find without searching drawers, cabinets or crawling around on the floor finding what I dropped.

 

[DrEntropy]

My car books are mostly in one area of the bookshelves but some seem to have 'migrated' to places unknown. Recently found a couple Lotus books in 'Her Area' among the artists tomes. Not sure just why or how they got there.