Dione J
Member
Registered: 22nd Sep 04
Location: West Midlands Drives: Leon Cupra Turbo
User status: Offline
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Hi
Has anyone tried to fit a 2.0 throttle body (off any late vauxhall 2.0 engines - cavaliers, etc) to a 1.4 8V Corsa SRi engine before? I tried this for an experiment and it sort of worked but due to I use my car daily too and from work it kind of never got set-up correctly so I went back to the standard one but really notice the difference in the pulling, the car felt like a 1.6 16V lol.
Any thoughts or help would be much appreciated?
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Rileysport
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Registered: 18th Jun 04
Location: West Yorkshire
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if you fit the full plenum etc off the 8v 2.0 you might get results, ive got on elaying around, was going to look at this myself 
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Dione J
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Registered: 22nd Sep 04
Location: West Midlands Drives: Leon Cupra Turbo
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anyone else??
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ffls
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Registered: 29th May 02
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In theory you should remap to suit bigger throttle body, using a Unichip for instance, to sort the mixture, if not it will run lean I guess
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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The 8v throttle bodys are much bigger than the 16v ones if they are the same as the 1.6 8v ones anyway, so I cant see any gain tbh.
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Dave A
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Registered: 10th Dec 03
Location: County Durham
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probably could improve airflow due to having a larger intake, but unlikely to make any major gains apart from throttle response
"pulls like a 1.6 16v"
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sri14
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Registered: 24th Nov 04
Location: Derbyshire
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I didnt think that a 2.0 plenum would fit as the ports wouldnt line up as its big block. was the 2.0 throttle body easy to fit, ie streight swap. have looked at my 1.4 8v throttle body and thought a larger butterfly might help a bit
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Rileysport
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Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
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dunno about the full plenum fitting, i'll look next week when the engine's out
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ffls
Member
Registered: 29th May 02
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And what about bigger throttle for 1.416v or 1.616v?
These are sold by several companies at an outrageous price ieMantzel, courtenay regal
Just 2 or 3 bhp more but...everything counts
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Dione J
Member
Registered: 22nd Sep 04
Location: West Midlands Drives: Leon Cupra Turbo
User status: Offline
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quote:
Originally posted by miles
The 8v throttle bodys are much bigger than the 16v ones if they are the same as the 1.6 8v ones anyway, so I cant see any gain tbh.
The 1.4 8V throttle bodies are way smaller than the 2.0 cavalier 16V throttle body, hence the difference in diamater and more airflow = more bhp, not sure how much it is but it made a good difference with pick up performance
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Dione J
Member
Registered: 22nd Sep 04
Location: West Midlands Drives: Leon Cupra Turbo
User status: Offline
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quote:
Originally posted by ffls
In theory you should remap to suit bigger throttle body, using a Unichip for instance, to sort the mixture, if not it will run lean I guess
Thankyou at least someone talks sense, cheers for the advice
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