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Post by Al Ramone on Dec 25, 2014 19:50:14 GMT 1
Filters? Nah, I'll run them how they are. Now that's a shame... any reason you want to cause premature engine wear with no performance benefits? Decent filters would likely improve performance (due to stabilizing airflow) as well as still sounding awesome. |
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randywanger
Full Member
Posts: 265 
Location: Chamonix or Essex
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Post by randywanger on Dec 26, 2014 12:07:17 GMT 1
Filters? Nah, I'll run them how they are. Now that's a shame... any reason you want to cause premature engine wear with no performance benefits? Decent filters would likely improve performance (due to stabilizing airflow) as well as still sounding awesome. #BecauseRaceCar How is it a shame? My thinking is along the same lines as why I'll keep the TRD tacho and TRD wheels and the nasty orange colour, it's the way it ran in Japan, it's the way it'll run here. Many race cars run with no filters, there must be a reason behind it other then it looks cool? Happy to be proved wrong. If I can get it road legal then I'll stick some socks over them for street use. |
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Post by Al Ramone on Dec 26, 2014 17:34:32 GMT 1
many people run without air filters because they don't know better...
You've only got to look at proper race cars and you'll see they will all use filters, only exception might be full on drag cars where the engines get stripped down after a meeting and are only run for a very,very short time.
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Post by seancornwall on Dec 26, 2014 21:57:05 GMT 1
Just to give an opinion - anyone that tells you that running air filters isn't a necessity on ANY car doesn't know what they are talking about. Balanced air flow and clean air are both imperative to peak performance from carburettors.
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randywanger
Full Member
Posts: 265
Location: Chamonix or Essex
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Post by randywanger on Dec 27, 2014 18:28:37 GMT 1
Like I said, happy to be proven wrong, but being more of a motorsport fan than a 'car scene' fan I've spent many hours wandering around the pits of classic and historic races and almost all early GP, Sports, Saloons running carbs don't run air filters. Maybe something's been lost in translation...  Tons of images such as this online. |
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Post by Al Ramone on Dec 27, 2014 21:52:42 GMT 1
As I said, there are plenty of people who don't (or didn't) know better.
You've only got to look at formula 1, possible the cleanest tracks and certainly the teams are looking for every last bit of power they can get and all of them will be running air filters.
I'm certainly not interested in what's scene, just well engineered tech.
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randywanger
Full Member
Posts: 265
Location: Chamonix or Essex
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Post by randywanger on Dec 27, 2014 23:57:30 GMT 1
I do hear you. Once the engine is running I'll do some back to back testing on the dyno and figure out what works best for me.  SCCN's #35 Bluebird Coupe FIA head, Solex 50 and no filters. |
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Post by Al Ramone on Dec 28, 2014 10:54:49 GMT 1
See most people look at that and think cool. I just see poor workmanship.
But then rubbish air filters aren't much better. A decent sized K&N is still about the best there is
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Post by gainsb1 on Dec 28, 2014 12:02:53 GMT 1
I've heard that fitting some decent (K&N) filters can free up a few extra horses. Any truth in that?
Leigh (Area rep)
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Post by Al Ramone on Dec 28, 2014 18:16:24 GMT 1
I guess you mean replacing a stock element with a K&N element? if so then no, not going to make any real difference on an unmodified engine.
And in some cases could lose horsepower and MPG if you replaced a stock airfilter housing with an aftermarket type that wasn't ducted correctly.
As with all engine tuning, it's all about matching parts and fitting them correctly, not just bolting stuff on and hoping it'll work.
Anyway, sorry for going off topic.
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Post by antdat on Dec 29, 2014 9:28:09 GMT 1
We run no filters on the race car as we gain HP and Torque. it was proven on an engine dyno, with the K+N filters in place we lost HP and torque.
Every day use of a car I wouldn't think of running with out filters but on race track every little squeeze of power helps lol
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Post by Al Ramone on Dec 29, 2014 10:42:04 GMT 1
Must have been incorrectly sized filter. Most likely they were too shallow and the stand off from the trumpet and the top plate too close. As i said, correctly matched and fitted parts make power.
Another factor is most chassis dyno runs are done with the bonnet open, so they don't give a true impression of the car on the road/track and the air flow around the engine
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Post by antdat on Dec 29, 2014 10:53:23 GMT 1
the engine wasn't in the car(Engine dyno) The filters and trumpets are the correct size for the engine, there was a series of test done. Different trumpets, with without K+N, with without K+N covers, Different exhaust etc etc
The engine was on the dyno for 2-3 days for testing/tuning.
We are heading into the 5th season with no issues with running with out filters
As I have already said I wouldn't run an engine with out filter every day
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Post by Al Ramone on Dec 29, 2014 11:00:28 GMT 1
Found this image as a perfect example of how not to do it. As you can see the trumpet is very close to the lid of the filter and will restrict air flow and lose power. 1 1/2" is the minimum clearance required here. shows you that you can have good parts, but if they're not matched correctly you can still get it wrong. Attachments:
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Post by antdat on Dec 29, 2014 11:14:42 GMT 1
I'm well aware of how things can go wrong if not matched. And i'm not disagreeing with you and I never said it was right/wrong. I was just saying the benefits we have on the race car with running no filters
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