Subject	On stock, clipped turbos, no. I would expect you would
Posted by	Ash's Z on January 19, 2006 at 3:34 PM
	This message has been viewed 286 times.
In Reply To	thats awsome!!!! posted by 300zdett(nj) on January 19, 2006 at 03:25 PM
Message	see an improvement in horsepower somewhere around 30-40 at best to the wheel around the 400RWHP level. The biggest bottleneck with the stock turbos is more the turbine section than it is the compressor section. You can offset the compressor's efficiency with good intercooling; water injection would help even more - but the turbine section is so small that moving that much air becomes incredibly difficult for the engine to push out during the exhaust stroke. Clipping the turbine wheels would resolve this with very little detriment to spoolup. FWIW, I am planning to do this on my turbochargers after I get my initial dyno results. #1 reason why I build my manifolds such that I can change turbos without removing the engine. =) [ ashspecz.com ] [ agpowers@bellsouth.net ] Enthusiasts soon understand each other. --W. Irving. Are you an enthusiast? If you are out to describe the truth, leave elegance to the tailor. Albert Einstein
Follow Ups	porting the clipping the stock turbo????? - 300zdett(nj) 15:04:39 01/19/06 what is clipping the turbos? (n/m) - Atl300zxTT (Productive) 15:11:18 01/19/06 Re: what is clipping the turbos? - 300zdett(nj) 15:12:39 01/19/06 I cant invision any advantage to that (n/m) - sfpearl300zTT 15:14:10 01/19/06 Maybe it's like trimming (tuning) a propeller... - testingzwaters 15:47:49 01/19/06 wrong - genic 17:24:43 01/19/06 Not exactly. I am going on information that I have acquired - Ash's Z 17:50:15 01/19/06 my turbos that are clipped are on my Z...not a - genic 21:55:04 01/19/06 Do you have any comparative dynocharts that shows - Ash's Z 14:42:19 01/20/06 Awesome! I remember you telling me the story behind - BlitZ95TT (Z32TT.COM) 15:14:57 01/19/06 well its getting there no there yet..... - 300zdett(nj) 15:21:20 01/19/06 I can't see that being a good way to make power. (n/m) - Scotts94z32 15:18:32 01/19/06 Did it on my jet engine. Here is a picture of what this - Ash's Z 15:21:00 01/19/06 Ash with a Jet engine..........not suprised. :) (n/m) - WAGGZ 15:23:59 01/19/06 thats awsome!!!! - 300zdett(nj) 15:25:15 01/19/06 On stock, clipped turbos, no. I would expect you would - Ash's Z 15:34:25 01/19/06 Wouldn't this make the dyno shift right and more peaky - BigTDogg (MA) 15:46:50 01/19/06 Not like you would expect, no. The trailing edges of the - Ash's Z 15:57:14 01/19/06 Interesting - chenc544 15:47:35 01/19/06 I wouldn't recommend it to be done on a set of stock - Ash's Z 15:59:48 01/19/06 Clarification: I would recommend it to be done, however, - Ash's Z 16:05:48 01/19/06 This post needs more exclamation marks. (n/m) - Kenny 15:39:29 01/19/06 you have a fever and the only cure is... (n/m) - Spee 17:05:04 01/19/06 BTW, "clipping" is typically gauged in degrees. This clip - Ash's Z 15:36:40 01/19/06 Ash.. anyone ever tell you your nuts?? (J/K) (n/m) - madtdogs 15:42:11 01/19/06 what about his nuts? (n/m) - SactoTodd 15:50:57 01/19/06 You know what really p!sses me off? - BigTDogg (MA) 16:07:11 01/19/06 Todd you were never this hypocritical (n/m) - bankruptedz 16:27:01 01/19/06 he has a lot of ppl on them. (n/m) - Halo Z 16:40:43 01/19/06 That's gotta hurt. Poor guy. (n/m) - ssm300z 16:57:55 01/19/06 When you gonna give someone else a turn? Our - Ash's Z 17:13:06 01/19/06 when you learn how to weld. - Halo Z 18:02:55 01/19/06 Where's your beef? (n/m) - Ash's Z 18:30:33 01/19/06 So all talk! (n/m) - bankruptedz 18:53:44 01/19/06 Im not sure id stand next to a jet engine i biult myself - madtdogs 17:19:05 01/19/06 Video: - Ash's Z 17:39:13 01/19/06 Seen it.. loved it.... - madtdogs 17:43:12 01/19/06 you left out the crazy hair and duct taped glasses (n/m) - Max865(ATL) 20:32:39 01/19/06 haha. And that was in the kitchen! (n/m) - WAGGZ 19:39:18 01/19/06 Always thought a small catalytic conv would made a - CaliguyPurdue 16:51:16 01/19/06 It would probably melt down. Combustion temps are - Ash's Z 17:15:37 01/19/06 Clipping the turbos will also reduce the life effiency - stickeefingerz (Cali) 15:59:47 01/19/06 I did forget to mention that it reduces the efficiency of - Ash's Z 16:02:19 01/19/06 Average spool velocity could potentially be higher... - Kenny 17:01:55 01/19/06 spool velocity is dependent on boost pressure. If you run - Ash's Z 17:16:14 01/19/06 It's not a one variable equation. The wheel geometry... - Kenny 17:19:12 01/19/06 Sorry dude, but you apparently dont understand how a - Ash's Z 17:38:07 01/19/06 lol - Kenny 17:47:45 01/19/06 Mmmmm, K. (n/m) - Ash's Z 17:57:01 01/19/06 Re: Mmmmm, K. - Kenny 17:58:15 01/19/06 Re: Re: Mmmmm, K. - Ash's Z 17:59:36 01/19/06 I'd like to think that I'm neither. (n/m) - Kenny 18:03:38 01/19/06 You might pre-qualify for an award there... - Ash's Z 18:05:44 01/19/06 p.s. if you clipped the compressor wheel like this, it would - Ash's Z 18:01:55 01/19/06 Who cares? - Kenny 18:07:27 01/19/06 Remove the filter and toss a few washers into the intake - Ash's Z 18:10:35 01/19/06 "anyone have any bread?" - WAGGZ 19:27:36 01/19/06 Re: porting the clipping the stock turbo????? - chachizxtt 18:17:02 01/19/06 Re: porting the clipping the stock turbo????? - chachizxtt 18:23:04 01/19/06 I did that for my talon Tsi.. It gives more top end. - Shawn300zTT GT28R MD 23:57:09 01/19/06 When you say it loses efficiency, how did you make that - Ash's Z 14:48:49 01/20/06
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