The 'E' Type Forum

Hello All.
I'm converting my series 2 E Type to RHD and wondered what others who had carried out this conversion had used as an air filter for twin Stromberg's. Being a late series 2 I am unable to use the original air filter as its obstructed by the pedal box.
It seems I have 2 options fitting 2 K&N style air filters or the early series 2 plenum and canister filter. (would that clear the pedal box.?? ).
Which brings me to my second question. As l cant use my original filter I'm assuming l will have to remove all of the emission's do l just have to plug the pipe on the inlet manifold and change the oil breather cover to an earlier type.

Cheers Phil.

I'd suggest using the "early" - it's actually most of them - Series 2 plenum and canister filter is best. The canister filter assembly is available from The Usuals and given that there are many folks who convert to triple SU's you should be able to find a second-hand 2 carb. plenum for Stromberg's easily enough.

The K&N's whilst good filters will give you more induction noise and look out of place.

I have heard it's possible to modify your current air filter by cutting back on the part that fouls but difficult to do without looking a bodge.

With the standard plenum the engine crankcase breather pipe runs from the front of the timing chain housing to a fitting under the plenum. There's no inlet temperature control pipework to deal with.

Hi Phil
By coincidence, just yesterday I received a pair of K&N Filters, but on trying to fit them found the front one will not go over the chassis rail (by at least half an inch)
I'm leaving mine as LHD, however also trying to replace the standard box air filter, like yours for something more interesting!

Does anyone know the benefit (or otherwise) of removing the secondary inlet manifold? Guess the throttle linkage would need modifying and water outlets blocked off.

Hi Phil,
I converted my 2+2 to right hand drive and made the mistake of ordering K&N filters that didn't fit!
I ended up with fitting Ram-flo by Lynx filters to my Stromberg's..........look very smart as well.
Will try to download a photo if you want to see how they look?

I'd like to see them, please, Tim.
Looks like I'll have to go that route if they clear the chassis rail.

Drive35 wrote: ↑

Tue Jan 19, 2021 12:25 pm

Does anyone know the benefit (or otherwise) of removing the secondary inlet manifold? Guess the throttle linkage would need modifying and water outlets blocked off.

The dis-benefit of removing the secondary inlet manifold apart from the ones you've mentioned is that you end up with the carbs too near the cylinder head worsening the airflow and probably torque. The best compromise is just to remove (or wire open) the secondary throttles but leave the secondary manifold in place.

The notch under the bulkhead end of the fibreglass plenum to clear the RHD stuff is pretty small - maybe 1/2” deep and and inch or two wide. It wouldn’t be hard to modify the LHD Strangleberg plenum and it would be invisible.

You could - with some trouble - make up two spacers to replace the secondary manifold and then fit 2” SUs but it wouldn’t be worth it as there’d be little benefit compared to wired open secondaries and the triangle plenum backplate and alloy ‘ram pipes’ would need modification to SU 2” spec?

As requested by Geoff..........Ram-flo by Lynx filters pic...........

Thank you all for your reply's.
Thanks for the photo Tim. also looks like there's plenty of room under the filter for the brake and clutch pipes.
Tim / Geoff. when you removed the emissions on your car, did you have to make any adjustments / tweaks to your Stromberg's.

Cheers Phil.

Thanks for the picture, Tim. Are they the RF400 type - can't seem to find any UK supplier at the moment or did you get them directly from Lynx? There are some copy versions from a US supplier, but works out about the same price as the real thing!

Still need to do the inner butterfly modification and haven't really run the car without the original air filter yet, Phil. Will let you know later.

I've found these Tim. but cant find the oval type
Phil.

https://classiccarbs.co.uk/product/cd-1 ... iumphvolvo

Well Phil & Geoff............I'm wondering now if they were old stock or whether a conversion kit was used.
I have to confess that I didn't actually fit them myself; my restorer did the modification, a couple of years back, when he converted the car from left to right hand drive. If I can find out from him what type of Lynx filters they are I will let you know.

Simple google search found this https://www.dellorto.co.uk/product-cate ... o-filters/

Thanks guys - had seen those sites and various others but no-one seems to list the oval type for Strombergs.

Tim - according to the Lynx site they're RF452S-2 https://www.lynxauto.com.au/catalog/pro ... gory/1531/
Am trying to get shipping costs from them anyway.

My apologies for the late response but I have only just received word back from my restorer. In his words..................."The company who supplied the filters are called Classic Carbs. There was no adjustment to the carbs required as I'm pretty sure, because yours is an American car, the carbs are not adjustable anyway. The filters came with a blank backplate which I drilled to suit the carb flange and that was all the fettling required."
I hope that helps, Geoff.........and others!

Thanks Tim - Have ordered a pair of those