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AU Barra 190 Conversion 

 

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 Post subject: Re: AU Barra 190 Conversion
Posted: Tue Sep 06, 2016 12:51 pm 
Getting Side Ways
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Ok thank you. Do you know if the standard timing postion is retarded or advanced? I am thinking of using it in a sprint/circuit car (budget build) and will be looking for higher end power which I guess means that I want and advanced postion. Happy to loose some (not all) low down torque for it. I guess I could just move the chain along, I think I read one tooth changes the timing by 15 degrees or have I got that wrong?
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 Post subject: Re: AU Barra 190 Conversion
Posted: Tue Sep 06, 2016 5:49 pm 
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TUF250 wrote:
Do you know if the standard timing position


When the VCT solenoid if off it sits at full retard -15° and when the VCT gets full power it sits at +15°
How far the VCT pushes the timing with lets say 6v for 0° TDC will depend on how hot/cold/thick the oil is. Normally the ECU will adjust the voltage(pwm) to the solenoid to compensate.

also one tooth is 2.5 degrees i think, if you use the VCT gear you run a risk of it slipping and moving the timing but I have never had that happen to this point with my barra. if you want max power you will need to get a vernier cam gear so you can lock/fine tune your timing but you lose the VCT.

 

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 Post subject: Re: AU Barra 190 Conversion
Posted: Tue Sep 06, 2016 10:39 pm 
Parts Gopher
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You are a*** about, no dc on the ocv's -10 degree's fully advanced.
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 Post subject: Re: AU Barra 190 Conversion
Posted: Sun Oct 16, 2016 10:25 pm 
Getting Side Ways
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So with no signal, prongs cut as advised. the timing would be locked to 10 degrees advanced? I would think this would be good for top end power?
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 Post subject: Re: AU Barra 190 Conversion
Posted: Sun Oct 16, 2016 10:41 pm 
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You won't get top-end power with the cam timing at 10 advance. I got the best power without using the VCT by taking the cam gear off (single center bolt) and eyeballing the timing closes to 0. you wont get true tdc without a vernier cam gear. It would be best to get a VCG as the VCT cam gear can slip and change the timing.

 

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 Post subject: Re: AU Barra 190 Conversion
Posted: Mon Oct 17, 2016 11:39 am 
Parts Gopher
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Can you explain how the gear slips when it is locked by a pin, when there is no oil supplied by the ocv's.
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 Post subject: Re: AU Barra 190 Conversion
Posted: Mon Oct 17, 2016 3:09 pm 
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If you can lock it with a pin then it wont slip at all. As for no oil your gess is as good as mine.

 

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