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Author z20leh vs c20let ????
corsagsigav
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Registered: 28th Jan 08
Location: Retford, Nottinghamshire
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13th Jan 11 at 16:19   View User's Profile U2U Member Reply With Quote
can anybody tell me more about the differences between the 2 engines other than power wise
DaveyLC
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13th Jan 11 at 16:30   View User's Profile U2U Member Reply With Quote
Z20LEH is low compression version of the X20XEV girdled bottom end with a Y22XE head with sodium filled valves.

The C20LET is the old pre ecotec engine same basic block and head as a C20XE and similar block to C20NE.
corsagsigav
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   13th Jan 11 at 16:44   View User's Profile U2U Member Reply With Quote
right so does that make the Z20LET more efficient as it is a ecotec effectively and is lighter due to it been newer
sbermingham91
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13th Jan 11 at 17:02   View User's Profile U2U Member Reply With Quote
you could say that, but if you can get a good C20LET, recently rebuilt etc, it would whoop the arse off a Z20LET/H the newer ecotecs are pretty pants compared to the old skool stuff, less to go wrong in them. ecotecs are all full of poopy sensors!
DaveyLC
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13th Jan 11 at 17:06   View User's Profile U2U Member Reply With Quote
Actually the Z20LEH/T is a much better block than the C20LET.

Its only the engine management that is the bottle neck.
corsagsigav
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13th Jan 11 at 17:11   View User's Profile U2U Member Reply With Quote
so if you put a Z20LEH into say a corsa b and have something like a gotec pro ecu it would be better.as dont the \Z20LEH have better oil ways or something
Warren G
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13th Jan 11 at 17:12   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by sbermingham91
you could say that, but if you can get a good C20LET, recently rebuilt etc, it would whoop the arse off a Z20LET/H the newer ecotecs are pretty pants compared to the old skool stuff, less to go wrong in them. ecotecs are all full of poopy sensors!


how can you say that? why rebuild it?

standard clet vs standard zleh will be quicker :/

no there full of sensors so make the engine more efficent

Warren G
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13th Jan 11 at 17:13   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by corsagsigav
so if you put a Z20LEH into say a corsa b and have something like a gotec pro ecu it would be better.as dont the \Z20LEH have better oil ways or something


oil spray jets, forge pistons and other bits and bobs
sbermingham91
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13th Jan 11 at 17:24   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Warren G

how can you say that? why rebuild it?

standard clet vs standard zleh will be quicker :/

no there full of sensors so make the engine more efficent



because these engines get the shit ragged out of them, if they're not rebuilt then theres bound to be problems with them.

I used to have a astra gsi turbo, z20 let, my mate had a mk3 astra gsi, with c20let, the mk3 was faster, and more efficient on fuel, he could see 35/40mpg sometimes, whereas I would struggle to get 33/34mpg.

old skool rules. FACT
Daveskater
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Registered: 29th Apr 08
Location: Oxford, UK Drives: Jap wagon
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13th Jan 11 at 17:27   View Garage View User's Profile U2U Member Reply With Quote
Surely the mk4 will weigh more though?

Also depends on the driver's weight, driving style and roads driven.

[Edited on 13-01-2011 by Daveskater]

Numberwang!

Originally posted by AlunJ
I like you Dave, you are a man of men

Originally Whatapp'd by Neo
Dave's maybe capable of a drive-by cuddle

Look at my pictures
DaveyLC
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13th Jan 11 at 17:28   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Daveskater
Surely the mk4 will weigh more though?
Daveskater
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Registered: 29th Apr 08
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13th Jan 11 at 17:31   View Garage View User's Profile U2U Member Reply With Quote


Numberwang!

Originally posted by AlunJ
I like you Dave, you are a man of men

Originally Whatapp'd by Neo
Dave's maybe capable of a drive-by cuddle

Look at my pictures
Warren G
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Location: Kent
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13th Jan 11 at 17:32   View User's Profile U2U Member Reply With Quote
its like the whole carb's vs Throttle bodies

tb's are so much better
philip2
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Registered: 1st Oct 06
Location: n.wales/chester
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13th Jan 11 at 17:35   View User's Profile U2U Member Reply With Quote
tbs are better mid range compared to carbs but generally both give same peak power.

all depends what your doing, dont half the clet rods, pistons, valve springs, caps, etc interchange between the two anyway?

 
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