Smaller plenum = more power?? It can!(sidewinder test too)
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- Joined: Thu Oct 27, 2005 6:38 pm
This thread is great!
This was on an FSAE car a few years back...
http://evilallianceracing.com/ipw-web/gallery/ConeTB
Slide throttle and variable length intake on the Mazda Rotary LeMans car, huge pics! (just to get you all drooling)
http://www.fd3s.net/787B/26b_1.jpg
http://www.fd3s.net/787B/26b_large.jpg
I know there are some SAE papers on that intake somewhere...
I've grown up in plastics extrusion (family busines). By grown up in I mean I was so young I had to stand on a box to reach most of the handles on the machines in the machine shop. Oh yeah the center in the die is called a spider.
Keep up the good work!
This was on an FSAE car a few years back...
http://evilallianceracing.com/ipw-web/gallery/ConeTB
Slide throttle and variable length intake on the Mazda Rotary LeMans car, huge pics! (just to get you all drooling)
http://www.fd3s.net/787B/26b_1.jpg
http://www.fd3s.net/787B/26b_large.jpg
I know there are some SAE papers on that intake somewhere...
I've grown up in plastics extrusion (family busines). By grown up in I mean I was so young I had to stand on a box to reach most of the handles on the machines in the machine shop. Oh yeah the center in the die is called a spider.
Keep up the good work!
- Plastermaster
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Speaking of the Tangerine , I am just completing some design upgrades which I think will allow me to get the best performance from my mufflers for upright conversion cars. I will be offering single and dual outlet mufflers in configurations for Beetle/Ghia, Thing, 356 - all based on the same header layout. The dual outlet silencers will come at an additional premium from now on though, due to the additional material and labor involved.
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- tallqball
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He may be skilled, but unless he has vast experience with a TIV the chances are that all the effort will result in ill results.Considering making my own, with help from a VERY skilled manifold fabricator
This is based on direct experience and the fact that in the past 6 weeks I have had an influx of questions here and on my store site that stem directly from inadequate exhaust systems and deficiencies they have created.
It blows me away every time someone spends 5K bucks on an engine and then couples a header to it that wouldn't be worth a hoot on a stock engine- then they wonder why the engine doesn't run worth a damn, can't be tuned and runs hot!
Purchasing a known exhaust system is the wisest product selection that one can make, cut a corner and lose your ass. exhaust on the TIV doesn't play.
What goes in must come back out, so all those big valves, higher CR and mean camshafts don't do you a damn bit of good unless you get it all exhausted effectively.
I have dynoed a customers 2270 with a home brewed header that didn't even make 100HP, but he would not listen, cheesed out and 250 miles later an exhaust valve snapped in half and the engine was fully compromised.
Exhaust IT, or exhaust yourself wondering why you spent a lot of money and have an untunable pig-
- Wally
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- Joined: Mon Oct 28, 2002 12:01 am
Yeah, the 2,7 shall probably get a tangerine as well. I still need to assemble the long block in mock-up form, so I can take measurements for Chris.
@Jake: Chris mentioned you were maybe having a custom 1 7/8" one build by Chris for a big engine. Would my 103x80 (unwelded 914 2,0 heads) benifit from that larger diameter (as opposed to 1 3/4") also?
Thanks,
Walter
@Jake: Chris mentioned you were maybe having a custom 1 7/8" one build by Chris for a big engine. Would my 103x80 (unwelded 914 2,0 heads) benifit from that larger diameter (as opposed to 1 3/4") also?
Thanks,
Walter
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi
www.apfelbeck.nl
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
www.apfelbeck.nl
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
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- Wally
- Posts: 4563
- Joined: Mon Oct 28, 2002 12:01 am
Looking for a really sporty engine with still a broad powerband (3500-6500-ish).
It has 5,7" rods and cam gives appr. 0.527" lift (split duration and lift btw) but doesn't have huge duration.
TIA,
Walter
It has 5,7" rods and cam gives appr. 0.527" lift (split duration and lift btw) but doesn't have huge duration.
TIA,
Walter
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi
www.apfelbeck.nl
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
www.apfelbeck.nl
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
- Wally
- Posts: 4563
- Joined: Mon Oct 28, 2002 12:01 am
Difficult to say, as it was an older custom grind, but measured in the us-way (at 0,1" lift iirc), it was like 262/266 degrees (in/ex).
Its EFI/ direct fire (DTA), so bottom torque could be good and tuned indefinately...
Chris gave me a hard time about the 1 7/8" size, but engine analyzer in combination with exhaust analyzer gave an ideal primary size of 49mm, which is almost 2"
Now, if YOU said it could be benificial to use the 1 7/8"in my application...
Thanks,
Walter
Its EFI/ direct fire (DTA), so bottom torque could be good and tuned indefinately...
Chris gave me a hard time about the 1 7/8" size, but engine analyzer in combination with exhaust analyzer gave an ideal primary size of 49mm, which is almost 2"
Now, if YOU said it could be benificial to use the 1 7/8"in my application...
Thanks,
Walter
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi
www.apfelbeck.nl
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
www.apfelbeck.nl
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
- Wally
- Posts: 4563
- Joined: Mon Oct 28, 2002 12:01 am
Jake,
Any thought as to the 1 7/8" primary size for a tangerine 4-2-1 with all the above info?
PM would be fine if its too OT
Thanks,
Walter
Any thought as to the 1 7/8" primary size for a tangerine 4-2-1 with all the above info?
PM would be fine if its too OT
Thanks,
Walter
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi
www.apfelbeck.nl
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
www.apfelbeck.nl
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
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- Joined: Fri Jul 07, 2000 12:01 am
- Wally
- Posts: 4563
- Joined: Mon Oct 28, 2002 12:01 am
At around 6500 I _ think_ , but I don't seek a specific rpm where top Hp should be at all; as much as possible over a broad range is what I'am after.
Don't know what the heads flow, but they are really really nicely done with 46/40 valves...
So whats your (gut) feeling/experience? Is it viable?
Tnx!
Don't know what the heads flow, but they are really really nicely done with 46/40 valves...
So whats your (gut) feeling/experience? Is it viable?
Tnx!
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi
www.apfelbeck.nl
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
www.apfelbeck.nl
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks