Series Air filter upgrade

[Apis Mellifera]

All I know is with the oil bath, my truck couldn't do 70 mph. With the K&N and no other changes, it will go faster than 70 mph. The "it'll wear the engine out" sentiment hasn't been my experience. I've had them on a number of street and race cars for years. When properly oiled, there is no appreciable increased wear. An old English engine with 80K or 100K miles is going to need a rebuild regardless of the air filter fitted.

[TeriAnn]

All I know is with the oil bath, my truck couldn't do 70 mph. With the K&N and no other changes, it will go faster than 70 mph.

You do realize of course that with stock gears, Suffix C or later transfercase & 32 inch dia tyres you are turning 4000 RPM at 70 MPH. An earlier transfercase or smaller tyres and you are revving higher.

[JimCT]

air resistance

every 90 degree bend in the air intake is the equivelant of 10ft of straight pipe. the snorkle is for dusty conditions, it is more restrictive than the oil bath. the LR engine works find with the K&N filter, we are talking about an almost tractor engine.

[Apis Mellifera]

You do realize of course that with stock gears, Suffix C or later transfercase & 32 inch dia tyres you are turning 4000 RPM at 70 MPH. An earlier transfercase or smaller tyres and you are revving higher.

What's wrong with 4000rpm? Been cruising at that engine speed for nearly 40 years. So far so good. If 4K scares you, you should hear 6K or 7K. Before retirement, my MGA (three main bearings and all) would see those speeds. I wouldn't spin the Rover that fast; there's no need, but there's nothing wrong with 4K. I have 30" tires and an OD, btw.

[bugeye88]

Which is why these trucks need overdrive to navigate todays insane roads!.
Cheers,
Rob
69 series2a Bug Eye with Fairey OD

[cedryck]

Amen to that!

[SafeAirOne]

Which is why these trucks need overdrive to navigate todays insane roads!.
Cheers,
Rob
69 series2a Bug Eye with Fairey OD

I disagree. What do I care how fast people behind me want to go when I'm in the right lane of a 4 lane highway?

[bugeye88]

Mark,

It's not that I care that I'm slower than the general flow of traffic (which I am) it's just a lot easier on the engine.
Rob

[Apis Mellifera]

Back on topic and in reply to a previous request, here's what mine looks like. The only number I see is B059A6.

[timc930]

Thank you. Everytime K&N comes up on any forum that I have been on, the old filtration and power debates start. You should see it on the 911 forums!!!! Guys there even dyno with and without to see difference in power.

I've got one on the 930, with zero noticeable difference in power, but it does make wonderful intake music when I get on it. The only reason I did it was to clean up the engine bay and to make it easier to make CO adjustments...was thinking same for the IIa, but I may just leave the oilbath on...

tim

[bugeye88]

Tim,

With all cars it's "air in....exhaust out" the least restriction the better on either end. Clean is good, finding the best of both is the answer. Low HP motors need to heed this more than any.

Rob
69 Bug Eye 88
67 Mini Cooper
67 M.G. Midget
67 V.W. series 1 sunroof
64 356 C Coupe
09 911 C4 Cab
K+N's on all of them

[LR Max]

Which is why these trucks need overdrive to navigate todays insane roads!.
Cheers,
Rob
69 series2a Bug Eye with Fairey OD

Yep.

I can tell you that being able to cruise comfortably at 65 mph is a lot better than lower speeds. Especially on the interstates.

Where I live, if you want to get anywhere in any kind of reasonable time, you hit the I-roads. Am I doing 85? No. But I'm pretty gosh darn close to the posted speed limit (and above in some places). Anyway, I am going pretty close to the speed of traffic which is what I want and the best way to stay out of trouble. Oh and stay in the right lane.

Anywho, I went to a cone filter since I did dual batteries. Removed the oil bath to make room for a 2nd battery. I have no regrets.

[gwmaxhunter]

I have seen dino tests on different air intake filter setups where a 300 buck system gives a increase in intake air temp and a loss in power. i want to play with on a stock rover and make a ram air system (a poor mans blower) and also play with different plenum risers. my 109 i have kept stock the oil bath air filter setup and it seems to work good.

[cedryck]

Thanks mates, love the pics.