Air Filter
Air Filter
Author
Discussion

stesrg

Original Poster:

1,578 posts

267 months

Thursday 1st July 2004
quotequote all
Any one out their sorted an after market air filter which actualy sucks cold air in from underneath the car ? if so i would like to hear about your mods, only i was offered one the other day for £250.00 and was wondering is it worth the mod????

HarryW

16,020 posts

298 months

Thursday 1st July 2004
quotequote all
Speak to Tim at [url]ACT|www.actproducts.co.uk[/url] about the best position, ducting and K&N filter for the griff, I'm sure he will be able to help you. Even if you don't buy from him he'll give you top advice, or if you wait a bit longer he may post here.

Harry

stesrg

Original Poster:

1,578 posts

267 months

Thursday 1st July 2004
quotequote all
Thanks.

RichB

56,216 posts

313 months

Friday 2nd July 2004
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I have been told that the location and size of the Griffith's air intake, up inside the front nose is perfectly ok. Rich...

stesrg

Original Poster:

1,578 posts

267 months

Friday 2nd July 2004
quotequote all
Naa !! for someone who is normal maybe.
steve...

RichB

56,216 posts

313 months

Friday 2nd July 2004
quotequote all
Ah well, I'm only going on what I've been told. Removing the air filter completley (thus allowing unrestricted air into the intake duct) makes no difference to the Griffith's bhp whilst it's on the rolling road. But then again feel free to try. Rich...

starmist

1,052 posts

271 months

Friday 2nd July 2004
quotequote all
Tim (ACT) probably won't be posting for a few days, as he is in the middle of moving.

Edited to add: but he will be as Pistonfest on Sunday if you're thinking of going!

>> Edited by starmist on Friday 2nd July 15:53

greenv8s

31,014 posts

313 months

Friday 2nd July 2004
quotequote all
You wouldn't expect any gain just from removing the filter (unless the filter was clogged/too small) but if the filter is drawing in hot air then there may be significant power gains from moving it so it draws in cold air. This works out at very roughly 1 BHP gain per degree Centigrade cooler, so pulling in hot air can lose masses of power.

RichB

56,216 posts

313 months

Friday 2nd July 2004
quotequote all
But Pete, on the Griffith the air intake is up front just inside the nose, so it would be impossible to get inlet air any cooler.

It was after I read the article in Sprint about the chap with the Purple Cerbera who made his own aluminium air intake box with a couple of Piper cross filters inside etc. that I got thinking, but messers Heath, Adams and Lamont said don't bother. Rich...

Guillotine

5,516 posts

293 months

Friday 2nd July 2004
quotequote all
BTW the KN filter is rated to 400bhp.

can get them (cheaper) from RT engineering (ex-wedge) he spec'd them in the first place, i think.

phone nos in sprint

RichB

56,216 posts

313 months

Sunday 4th July 2004
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Abdy, where are you going to fit a K&N filter on the GRiff?

Guillotine

5,516 posts

293 months

Sunday 4th July 2004
quotequote all
the KN fits directly if you have the early cylinder type. i do.

currently its moved anyway as i have an oil cooler there at the mo, but thats moving soon too.

RichB

56,216 posts

313 months

Sunday 4th July 2004
quotequote all
Andy, I can't visualise that because the air duct goes into the air box under the nose of the car? Do you sijmply remopve all that and fit the K&N onto the duct inside the engine bay? R...

Guillotine

5,516 posts

293 months

Sunday 4th July 2004
quotequote all
yours has the flat filter so i'm not sure.

the cylinder inlet is 75mm (3") and is 120mm wide and about 170mm long. on mine this just jubilee clips onto the pipe above the radiator in the nose. this picks up clean air from a hole above the no plate, above the radiator.

the other type is a flat foam filter which forms the base of the box above the no plate. there may be enough room inside the box where the pipe to the ammeter goes to fit the air filter on. i guess tim lamont would be the guy to ask if they're compatable.

stesrg

Original Poster:

1,578 posts

267 months

Sunday 4th July 2004
quotequote all
Talking to a bloke the other day and he said that i should remove my ducting and swap it for either a silicone 75mm hose or a polished aluminium one and fit a K&N Air filter in exactly the same place as the original one, and vent 2 50mm pipes using brake vent ducts to catch the air from under the car directed to the K&N, he said this will involve some brackets and cable ties and a little time, and would up the BHP by arround 5%, Sounded about right to me for around £120.00??????

tvr4ever

644 posts

289 months

Sunday 4th July 2004
quotequote all
Guillotine said:
the cylinder inlet is 75mm (3") and is 120mm wide and about 170mm long. on mine this just jubilee clips onto the pipe above the radiator in the nose. this picks up clean air from a hole above the no plate, above the radiator.


Yep, that's the one on mine, mine is a Green filter btw because they don't sell the K&N ones over here. I have been thinking of improving the cold air flow to the filter. Maybe you can enlarge the hole and bend the bracket so the filter will be lower and pick up a bit more cold air. Maybe install a heatshield on top also, any ideas ?

Fred

Guillotine

5,516 posts

293 months

Monday 5th July 2004
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like this?



>> Edited by Guillotine on Monday 5th July 00:02

tvr4ever

644 posts

289 months

Monday 5th July 2004
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Guillotine

Yep, I'm thinking something in the line of what's on your photo. Maybe when you make some sort of a box on the inside so it can't suck hot air and them make a scoop below the filter you can have ram air effect. Then again my imagination is running wild again, I'll settle for the scoop.

Fred

Guillotine

5,516 posts

293 months

Monday 5th July 2004
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working on it

hoping to combine oil cooler and filter.

RichB

56,216 posts

313 months

Monday 5th July 2004
quotequote all
Guillotine said:
yours has the flat filter so i'm not sure.

Oops sorry was being thick! Yes mine's a 500 so later style nose. Rich... Oh hang on your's is a 500 also?

>> Edited by RichB on Monday 5th July 10:29