All,
Tom's Import Toys (http://tomsimport.com/new/parts/parts.asp?sect=35&new=1)
offers a nice looking breather option you might want t consider for only $10.
No financial interest.
Cheers,
Carlos Cruz
________________________________
From: Bob Haskell <rchaskell@earthlink.net>
To: AlanB <bluehealey@gmail.com>
Cc: Healeys List <healeys@autox.team.net>
Sent: Tue, March 16, 2010 6:57:58 PM
Subject: Re: [Healeys] K&N air filter
Alan,
I like the idea of using a PCV valve. Not sure how to fit one to the rear
tri-carb manifold. Anyone do it?
The original Coopers filters fitted to the tri-carb are roughly 5" in diameter
for about 20 square inches. If I got the correct equation (new word for the
day: frustum of cone) from of my copy of Machinery Handbook, the K&N 59-9320
filter has an area of around 25 square inches. Ought to be adequate, but I
don't have a flow bench to confirm.
The dual carb setups have a larger air filters, so I would think/agree that a
filter larger than the 59-9320 would be required.
Cheers,
Bob
AlanB wrote:
> Team.
> I have been in touch with K&N and they identify Part number 56-9247 as the
> most appropriate for a 3000 with two carbs.
> http://www.knfilters.com/search/product.aspx?Prod=56-9247
> It is a classic pancake filter with a diameter of 6" and a depth of 2". A
> bit bigger than the 59-9320 but then we have almost double the displacement
> of an MGB. The backing plates are blank and have to be opened up to match
> the HD6 or 8 carbs. That gives the opportunity to offset the rear one lower
> to clear the shroud.
>
> As for the breather hole, my vote is don't bother. Fit a PCV valve as
> detailed in Norman's Tech Talk. A superb and discrete mod that completely
> eliminates the oil leaks caused by crankcase pressure. I fitted the air
> filters and PCV to my BJ8 and will be doing the same again to my modified
> BN4 which will soon be fitted with a slightly breathed on 3000 engine. DWR
> cam, gas flowed head, HD8's.
> Read about the PCV mod at
> http://www.nfahc.co.uk/PCV/
> _____________________________________________
> (______________ Alan Bromfield _______________)
> (______ \____1957-BN4____/ _______)
> (_________________________)
_______________________________________________
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