BeArDy
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Registered: 7th Aug 00
Location: Manchester
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http://www.corsasport.co.uk/board/viewthread.php?tid=108682&pid=1294143#pid1294143
i am not really into turbos and do not know much about how they are worked etc
so from what i am reading i can take (Example) :
-take a Corsa 1.2 16v Manifold have it made to take a very small turbo.
-then have all the pipe work made to it feeds the inlet.
-have the inlet made to take the piping.
-take it to a Chip/ECU place and have them make a ECU up
then i have a full running 1.2 16v turbo corsa?
as with low PSI turbos u do not needed any of the internals changed
anyone help me out here?
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Demo
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Registered: 27th Sep 01
Location: south wales Drives: astra sri ecoflex
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i would never reccomend anyone having a turbo on an engine that came outta the factory as n/a. youre right in saying that when running low boost you dont need the internals changed, but then the gain of power for the money youre spending seems a bit of a waste. and things can still go wrong. my mate had the first turbo zetec-s in the country (apart from the van aaken demo car) and he had endless problems with a conversion that was supposedly perfect. made me think twice about turboing n/a engines
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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It would produce jack all power.
You'd want an intercooler.
I dont see why the inlet would need modifying.
You might want to look into oil cooling.
I dont know what chips would be able to sort this out.
It would purely be a turbo for the sake of having a turbo, not for power.
Would probably prove unreliable.
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thane
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Registered: 9th Nov 03
Location: Lincoln/Scunthorpe - white sri-b
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as sum1 who makes turbos for a living (BIG ones for trains & ships) the amount of work needed and reliability issues as pointed out would make it pointless. van aaken used to do smaller blowers for small cc cars but are tending to look into superchargers. as demo said, van aakens turbo zs was good but had no end of problems (I used to hang on zetecs forum) so much so they stopped doing them and switched to a supercharger.
better off with an engine transplant, more power, reliabilty etc for the same money
[Edited on 20-12-2003 by thane]
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BeArDy
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Registered: 7th Aug 00
Location: Manchester
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quote:
Originally posted by miles
It would produce jack all power.
You'd want an intercooler.
I dont see why the inlet would need modifying.
You might want to look into oil cooling.
I dont know what chips would be able to sort this out.
It would purely be a turbo for the sake of having a turbo, not for power.
Would probably prove unreliable.
yes i know about the power i am just find out what the score is on fitting turbos
-ok so dont need to mod the inlet
-intercoolers ye dident think of that
-oil cooling not a problem really
-ECU i know a place that will do custom ECU an remaps for about 400
what about the oil feed for the turbos any ideas?
anything else to think about
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thane
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Registered: 9th Nov 03
Location: Lincoln/Scunthorpe - white sri-b
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ducting, insulation, waste gate, oil feeds and returns, suitable mounts, air feed (need to see a td corsa for that). remember, a low pressure turbo will still create heat, and it will need to go somewhere. an oil cooler would be a good idea and an intercooler mite not be strictly necessary. how exactly is the blower gonna mate up to block, cos id though you would need some good steel/sg iron for that?
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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A remap like a superchip wont be able to take positive pressure into account with a n/a ecu. I doubt unichips can either. You'd need to look into another bodge like a 5h injector unless you want to spend £550+ on a proper ecu + loom then get it mapped.
Oil feeds can be done with a oil cooler take off plate, this can also be used for an oil cooler if wanted as well, obviously.
If your running std compression then not using intercooler would be even more of a suicide mission!!
Will need a custom downpipe.
Any weaknesses in the engine would show up, and need uprating.
You'd really want at least a fat head gasket to lower the compression as well.
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blackula
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Registered: 26th Apr 03
Location: Cheshire
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Other factors , compression ratio on NA from the factory cars, is too high, limiting capabilites in general without extreme expense.
You can run good boost with stuff like water injection and intercoolers buts its all more expense.
As an example of an extremely weird factory turbo setup....
Metro Turbo, an ageing but tough A series engine, with the same CR as the other metrols, namly 9.4 - 1 limiting the boost it coudl take without the compression being lowered (Avonbars conversion lowered it to 7.4 -1) and it ran something like 4 psi boost with a big (for a 1.3 Metro) Garrett T3 turbo.
Yes the T3 was used in the Lotus Esprit and first Cossies, and was too big, the reason they used it was cos it ran cooler and at low boost was relaible and less chance of overheating and oil cooking than a T2.
Total power was 93 bhp. They wanted to use 7psi boost and get 110 bho but they figured the warranty claims on gearboxes would be too much.
So using a larger turbo has lag problems and more cost, but less restrictive, runs cooler, doesn't cook the oil and can provide a good boost at low pressure.
Example of a bad use of Turbo, the T2 on the 1800 Silvia......ran too hot and was restrictive, but spooled up quick.
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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9.4-1 CR is low for a n/a car anyway, I imagin the 1.2 16v is something like 10.5-1.
I think the LET is 9.0 - 1
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Fester
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Registered: 9th Oct 01
Location: Lancaster
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I don't think this has been mentioned but the sump would need to come off and you'd have to weld on a small lug for the oil return 
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vibrio
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Registered: 28th Feb 01
Location: POAH
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unichip can be used to map a forced induction conversion. 1.2 could make serious power depending on the strength of the block.
U2U'd you Beardy. forgot about oil cooler 
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WARPED
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Registered: 12th Jun 02
Location: Stoke + Wolves - Corsa Sport
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think there was a turbo technics corsa 1.2 turbo on ebay couple of weeks back
anyone remember it ? ? ?
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J da Silva
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Registered: 10th Apr 03
Location: The FACTory
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quote:
Originally posted by miles
9.4-1 CR is low for a n/a car anyway, I imagin the 1.2 16v is something like 10.5-1.
I think the LET is 9.0 - 1
Let's are 9.2-1
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WARPED
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Registered: 12th Jun 02
Location: Stoke + Wolves - Corsa Sport
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http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=2435091851&category=9858
its an 8v though i think, just thought might be of some help to ya 
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J da Silva
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Registered: 10th Apr 03
Location: The FACTory
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you can get LET's to 8.5:1 though miles
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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You could get a 1.2 16v to 8.5:1, but he doesn't want to change the compression.
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vibrio
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Registered: 28th Feb 01
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the 1.2 not quite high though. 10.5:1
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J da Silva
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Registered: 10th Apr 03
Location: The FACTory
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quote:
Originally posted by miles
You could get a 1.2 16v to 8.5:1, but he doesn't want to change the compression.
why bring it up then?
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Paul_J
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Registered: 6th Jun 02
Location: London
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Why do you ask beardy? and why have you chosen a 1.2 16v?
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mike16v
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Registered: 20th May 02
Location: sheffield, yorkshire
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my guess is he is after earning himself a bob or 2
[Edited on 22-12-2003 by mike16v]
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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quote:
Originally posted by VenomTurbo
quote:
Originally posted by miles
You could get a 1.2 16v to 8.5:1, but he doesn't want to change the compression.
why bring it up then?
I dont get you? I meant with a piston change you could get the compression down to 8.5:1 if you wanted.
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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Doing it to earn a bob or 2 is opening a huge can of worms!
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J da Silva
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Registered: 10th Apr 03
Location: The FACTory
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what i mean is, u were on my back coz i told u about LET compression ratio's, yet u mentioned it before i posted, was just informing u thats all, cant harm anything can it
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Paul_J
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Registered: 6th Jun 02
Location: London
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quote:
Originally posted by mike16v
my guess is he is after earning himself a bob or 2
[Edited on 22-12-2003 by mike16v]
how do you mean? learning to make his own turbos to supply to 1.2 16v owners? if the price is right and it works I'll be up for it 
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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I misread your post saying 'why bring it up then? As why 'bring up' the compression.
If your on about bringing things up then why mention you can get the let to 8.5:1 when you could do that to any engine?
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