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s12drifter | Posted: Nov 16 2012, 06:18 PM | ||
The Lulz Boat Group: Advanced Members Posts: 1,363 Member No.: 23,696 Joined: Mar 21st 2007 Location: Update Profile |
^ very correct. there is a 6 stroke/cycle engine that uses water after the 4th stroke which turns into steam giving it two more strokes. it doesnt need a radiator or cooling system because the water/steam cools it down so much. it would help fuel economy and power output too. however it's not in a single production car yet. and the idea came about in 1929 LOL This post has been edited by s12drifter on Nov 16 2012, 06:20 PM | ||
DigiBunny | Posted: Nov 16 2012, 09:58 PM |
Reading is magic! Group: Advanced Members Posts: 2,601 Member No.: 30,700 Joined: Sep 24th 2008 Location: Philippines | *Raises hand* Since Twinscroll turbos were mentioned, I'd like to ask anyway. How is it compare to a Twin turbo, functionally? From what I gather, it smoothens the airflow by sorting out the exhaust pulses that result from every stroke? |
Soran | Posted: Nov 16 2012, 11:40 PM |
Driving on the road of life.. Group: Advanced Members Posts: 874 Member No.: 3,498 Joined: Oct 2nd 2004 Location: Singapore | I drive a twincharged VW. It's a 1.4 litre Jetta that does 160hp stock Good thing about it is the torque, 250nm of it makes for jolly good fun at the lights |
MetalMan777 | Posted: Nov 17 2012, 12:08 AM | ||
Snooping as usual Group: Advanced Members Posts: 1,780 Member No.: 32,588 Joined: Apr 13th 2009 Location: what are you doing in my swamp? |
Twin turbos give you two completely diferent sets of compressors and turbines, ideally tuned to different airflow requirements (note similar boost pressure) . A twinscroll will simply allow you two different a/r ratios on the same turbine wheel. If you don't know that that means, I suggest you google area/radius ratio. [ Post made via Mobile Device ] | ||
s12drifter | Posted: Nov 17 2012, 09:33 AM |
The Lulz Boat Group: Advanced Members Posts: 1,363 Member No.: 23,696 Joined: Mar 21st 2007 Location: Update Profile | I'm running a twin scroll turbo. i start boosting by about 2400rpms and hit full boost by 3k |
chillined | Posted: Nov 26 2012, 07:05 PM |
IDW Goldmember Group: Advanced Members Posts: 1,470 Member No.: 23,552 Joined: Mar 10th 2007 Location: In the great snowy areas | Very nice, that's a quick spool up. I'm a big fan of the Holset HX series, they spool instantly with twin scroll, and are reliable to high heaven with great care. |
s12drifter | Posted: Nov 27 2012, 06:10 PM | ||
The Lulz Boat Group: Advanced Members Posts: 1,363 Member No.: 23,696 Joined: Mar 21st 2007 Location: Update Profile |
I have HX35 with a billet wheel (rare) and it's be RETARDED reliable. | ||
chillined | Posted: Nov 27 2012, 06:47 PM |
IDW Goldmember Group: Advanced Members Posts: 1,470 Member No.: 23,552 Joined: Mar 10th 2007 Location: In the great snowy areas | Batmowheel? |
Spaz | Posted: Nov 27 2012, 09:29 PM | ||
Just a guy towing a car across the country to chase a dream. Group: FORUM MODERATOR Posts: 9,272 Member No.: 30,193 Joined: Jul 25th 2008 Location: Plymouth, MN |
He's referring to the HX35 with a billet wheel being rare, not it having a wheel with a rare design. Those batmowheels are pretty awesome though. | ||
s12drifter | Posted: Nov 28 2012, 08:09 AM |
The Lulz Boat Group: Advanced Members Posts: 1,363 Member No.: 23,696 Joined: Mar 21st 2007 Location: Update Profile | it came with a billet wheel. i have no idea but it looks original like spaz said. i would like to do a HX40/35 though. |
chillined | Posted: Nov 28 2012, 05:11 PM | ||
IDW Goldmember Group: Advanced Members Posts: 1,470 Member No.: 23,552 Joined: Mar 10th 2007 Location: In the great snowy areas |
Indeed. It's why I assumed BatMoWheel, because if I was going billet, it'd be that. Still, that's pretty cool having a billet HX35, explains the quick spool. | ||
Chihiro | Posted: Mar 5 2013, 07:25 PM | ||
Shmuck Group: Members Posts: 5 Member No.: 40,712 Joined: Mar 5th 2013 Location: Update Profile |
It's possible, use the 4A-GZE Block and Head (4A-GZE is a supercharged 4A-GE from the AW11 MR2) and modify it for twin charging but the question is the engine's reliability. Or use the Formula Atlantic 4A-GE motor it does really handle the boost abuse. Natural Aspirated Engines for me is still the best. | ||
Banken | Posted: Apr 8 2013, 05:15 PM | ||
IDW Goldmember Group: Advanced Members Posts: 1,110 Member No.: 22,465 Joined: Dec 17th 2006 Location: Japan |
OTOH, economy is also the primary reason they're no longer in production... This post has been edited by Banken on Apr 8 2013, 05:29 PM | ||
Nomake Wan | Posted: Apr 8 2013, 05:40 PM | ||
ShiMACHaze Group: Advanced Members Posts: 19,542 Member No.: 5,394 Joined: Feb 5th 2005 Location: Drydock |
Right, but look at how long they were in active production and in consumer cars. Compare that to the discussion at hand and you'll find the relevance in my statement. | ||
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Banken | Posted: Apr 9 2013, 06:20 PM |
IDW Goldmember Group: Advanced Members Posts: 1,110 Member No.: 22,465 Joined: Dec 17th 2006 Location: Japan | Yeah, but we haven't seen a true high-performance rotary sold in the US since 1996... that's 17 years! And that same high performance rotary engine went out of production in 2002. The last mass produced three-rotor rotary went out of production in 1995. |
Nomake Wan | Posted: Apr 9 2013, 07:02 PM |
ShiMACHaze Group: Advanced Members Posts: 19,542 Member No.: 5,394 Joined: Feb 5th 2005 Location: Drydock | I'm not sure what that has to do with the discussion at hand...? The point was that the Wankel design, with all its flaws, was in production vehicles for so long. It doesn't matter whether it was a 'high-performance' version or not. The point was simply that they were around. |
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Banken | Posted: Apr 10 2013, 05:32 PM |
IDW Goldmember Group: Advanced Members Posts: 1,110 Member No.: 22,465 Joined: Dec 17th 2006 Location: Japan | They were around when gas was $2 a gallon, is my point. And bad gas mileage is what killed the RX-8. For what it's worth, two-stroke engines, for all their flaws, were around for a long time too, but they're being phased out because of how bad they are for the environment. |
Nomake Wan | Posted: Apr 10 2013, 06:13 PM | ||
ShiMACHaze Group: Advanced Members Posts: 19,542 Member No.: 5,394 Joined: Feb 5th 2005 Location: Drydock |
2-stroke engines have been in production cars? Please provide source? But since you seem to still be missing--perhaps on purpose--the point I was making, the point is still that twincharging wasn't done in production vehicles of any significant number or for any significant length of time, and that efficiency cannot be deemed the hard-and-fast reason since inefficient engines have been in production cars aplenty. Hopefully this is the last time I'll need to repeat myself since at this point I really don't feel like doing it anymore. | ||
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s12drifter | Posted: Apr 10 2013, 06:15 PM | ||
The Lulz Boat Group: Advanced Members Posts: 1,363 Member No.: 23,696 Joined: Mar 21st 2007 Location: Update Profile |
volvo or saab had a engine with a 2 stroke i forget what model... i believe. im not 100% i remember hearing something about it | ||
Banken | Posted: Apr 10 2013, 10:17 PM | ||
IDW Goldmember Group: Advanced Members Posts: 1,110 Member No.: 22,465 Joined: Dec 17th 2006 Location: Japan |
Of course not, twincharging hasn't been done because it's it doesn't make any sense. Both a turbo or a supercharger will give you as much power as you could possibly need, the only difference being that the supercharger is less efficient and more linear. If you're worried about turbo lag all you need is the right gear ratios and some sort of anti-lag. And it also doesn't work financially... which is why even the Veyron is has quadruplet turbos instead of a two giant turbos and a supercharger. It just complicates things unnecessarily. | ||
s12drifter | Posted: Apr 11 2013, 10:58 AM | ||
The Lulz Boat Group: Advanced Members Posts: 1,363 Member No.: 23,696 Joined: Mar 21st 2007 Location: Update Profile |
this I completely disagree with i dont know how much you know about internal combustion engines but anti lag DESTROYS engines turbos exhaust manifold. if you have a anti lag car i give no more the 5,000 miles on a professionally built engine. | ||
TTH | Posted: Apr 11 2013, 11:24 AM | ||||
IDW Regular Member Group: Members Posts: 222 Member No.: 27,213 Joined: Oct 28th 2007 Location: Mile high, piloting an Aeroplain |
All old Saabs before 1967 had 2-stroke 3 cyl engine.. Which brings me to my favourite topic, Saab "Ecopower"
VAG still has twincharged engine in production and it's pretty much the most popular petrol engine in Europe.. The 1.4 TSI is available to pretty much any VAG-group vehicle, from Audi to Skoda... Of cource, it's only one engine model but still, the production numbers of this engine is starting to be pretty significant.. So it cannot be complete junk if it's still in production after eight years.. | ||||
Nomake Wan | Posted: Apr 11 2013, 02:06 PM | ||
ShiMACHaze Group: Advanced Members Posts: 19,542 Member No.: 5,394 Joined: Feb 5th 2005 Location: Drydock |
Well I'll be damned. | ||
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Banken | Posted: Apr 11 2013, 02:33 PM | ||
IDW Goldmember Group: Advanced Members Posts: 1,110 Member No.: 22,465 Joined: Dec 17th 2006 Location: Japan |
Afterburn systems aren't the only kind of anti-lag. | ||
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