Author Topic: C20NE throttle body modify  (Read 1891 times)

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green dream

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C20NE throttle body modify
« on: November 12, 2006, 00:49:45 AM »
Here is a nice work to do.
Here are the photos I've send on Italian Calibra Club Forum, they are in italian language, but I think you might understand.
For the throttle body, I've machined the inside from original 55mm (2,165inch) to 59mm (2,322inch) as the picture explain



then I've filed the shaft who hold the throttle inside the throttle body.This last one was build up in alluminium for the new bore size.
Here is the shaft modified



Some photos about body and shaft





Soon I'll receive a C20XE or C20LET throttle body, then I'll say if the same work might be done on it.
Cheers

Offline calibra

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Re: C20NE throttle body modify
« Reply #1 on: November 12, 2006, 12:38:28 PM »
ive had my tophat and throttel boddie bored out, hasnt made any difference  as in feeling to drive. but on paper maybe if ur running 300bhp+ every little helps.
http://i76.photobucket.com/albums/j6/calibraman/sidefinished1.jpg - my car Calibra Turbo, 4 Wheel Driven, 6 - Speed, 18" bk racing alloys, EBC Uprated discs, red stuff pads, painted calipers, full respray in a 2 tone blue/purple metallic, full body kit, arches lifted, door trims filled, roof bars filled, back wiper
filled, samco turbo hoses, lots of gauges


CallyT

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Re: C20NE throttle body modify
« Reply #2 on: November 12, 2006, 12:50:30 PM »
Have you tested this back to back on same RR with a stock throttle?

green dream

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Re: C20NE throttle body modify
« Reply #3 on: November 12, 2006, 16:04:12 PM »
I'm waiting for the throttle and to cromize the body, then I will install, but without any changes in ECU or camshaft with higher lift valve value, I think the difference is not checkable. The ECU (as you know) can afford a little correction reposing on lambda and airmass device, I don't know if the higher flow that new throttle can provide,will really aim from pistons.Using a C20SEH camshaft with higher lift valve value (and an new ECU map)may give a good response

PS:Please explain to me what it mean RR (I can't understand you slang or shorted words) thx

Offline redgriffen

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Re: C20NE throttle body modify
« Reply #4 on: November 12, 2006, 16:21:04 PM »
RR = Roling Road.  Dyno machine,
Jaguar 2.7TD Sport Fully Kitted by Jaguar

green dream

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Re: C20NE throttle body modify
« Reply #5 on: November 12, 2006, 16:37:28 PM »
Perfect, thx
No, I haven't tried on dyno machine, but my engine is original (only supersprint header, racing spark, K&N filter and fuel pression regulator) so I think to have regained the hp lost by the road (240t km), I'm very curious about the topic taking about 8V engine, were someone of us says that is a your associate having installed the 20SEH camshaft, this can be a good idea to use with new throttle body.
Some time ago I was thinking about using 4 throttle bodys (I have found 4 ,BMW M3 2.3ltr E30 model, throttle bodys) and a right camshaft to increase the engine power, but now I'm thinking about a 3.0 V6 engine from Omega, maybe in Germany I've find someone who find the engine and instal on my car, for righ money (in Italy we don't spent less than 3000

Offline calibra

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Re: C20NE throttle body modify
« Reply #6 on: November 15, 2006, 13:52:19 PM »
K&N ?? wont help u out. with making more bhp. its just sucking in hot air
http://i76.photobucket.com/albums/j6/calibraman/sidefinished1.jpg - my car Calibra Turbo, 4 Wheel Driven, 6 - Speed, 18" bk racing alloys, EBC Uprated discs, red stuff pads, painted calipers, full respray in a 2 tone blue/purple metallic, full body kit, arches lifted, door trims filled, roof bars filled, back wiper
filled, samco turbo hoses, lots of gauges


green dream

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Re: C20NE throttle body modify
« Reply #7 on: November 15, 2006, 20:29:16 PM »
I haven't the direct air filter but the one on airbox, I've always say that direct air filters are quite aimless. I've modified too the resonator, putting a front intake of air (cutting and closing the back one who gives air from front wheel) on it and with a duct who catch the air from the front bumper.I haven't any problems with my filter and with  hot air (not much more than the original power loss by sucking hot air)


 


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