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Ceramic Coated Extractors OR Under-Drives 

 

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 Post subject: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 5:51 pm 
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im currently in the process of installing gt40p heads explorer manifolds and a crow cam (cant remember the p/n of the top of my head) on the xr8. now ive also got a set of pacie ph4000 ready to bolt up also.

my question would i be better of getting the extractors ceramic coated OR installing a set of bpt underdrives. each have there pros and cons, heres what i can think of:

ceramic coating
PRO
- reduced eng temps
- increase in tourque
- very bling bling finish :D

CON
cant really think of a con with this one

under drives

PRO
- increased throttle response
- more power and torque

CON
- stuff all batt charge under 1500rpm
- more strain on cooling system
- increased low speed steering effort

going by the above pros and cons it looks like the coating is the clear winner but id like to hear your thoughts.

prices between the two are virtually identical so yeh thats not a factor

cheers

 

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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 5:56 pm 
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both sounds like a good option
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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 5:59 pm 
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facer01 wrote:
both sounds like a good option


yeh dont really have the cash for both so its either one OR the other

 

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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 6:09 pm 
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underdrives will give you an increase you can feel.
i don't think the slight increase in torque from the ceramic coating will be noticable.
only people ive heard having issues with battery charge with under drives is those who only go on short stop-start drives.

 

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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 6:09 pm 
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i think you will notice more of an improvement in the way the engine performs with the underdrives compared to ceramic coating the extractors..
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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 6:30 pm 
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Coating and performance im not sure about but if ur gona coat them eventually when u have the money just do them first as u dont want to be pulling extractors out again to get them coated and put back again.

Underdrive pullies are much easier to do at any given time so coat extractors then when u have cash for underdrives then do them.

 

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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 6:34 pm 
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^^^ What he said - You can do the pulleys any time. Exhaust isnt so nice...
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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 6:42 pm 
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i noticed more low down torque going from 4480 (standard blue coating) to 4480's with Kermachrome coating and engine bay was heaps cooler

 

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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 6:52 pm 
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Whats an underdrive?

 

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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 7:33 pm 
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do the coating and drop the heat

 

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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 7:36 pm 
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ford-racer46 wrote:
Whats an underdrive?

smaller pulleys on the front of the engine

cheers bear

 

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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 7:38 pm 
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I didnt no that was possible, that would boost revs wouldnt it?

 

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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 7:48 pm 
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ford-racer46 wrote:
I didnt no that was possible, that would boost revs wouldnt it?

hey

it should as under drive pullies reduce rotating mass, just think of a lightened flywheel, same principles

cheers bear

 

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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 7:56 pm 
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Can it be done to a six/is it worth it?

 

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 Post subject: Re: Ceramic Coated Extractors OR Under-Drives
Posted: Mon May 10, 2010 8:31 pm 
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hey

theoretically it can be done to any motor, its just a case if parts are availiable or if one off custom parts need to be made

another thing with under drives you will often need to run a smaller belt.

i will be bolting a set onto the bf fairmont ghia then i will be supercharging it :twisted: :twisted: at this stage i will be going a capa kit with intercooler

cheers bear

 

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