inlets and a remap

[Ad172UK]

IIRC In the PFC Article they said.

Exhaust manifold porting larger than the ports in the head.

Inlet manifold smaller than the ports in the head.

This stops the gases passing back. Also the Inlet manifolds should not be smooth sanded when matched, but left rough to add turbulence to the air. Exhaust manifolds must be smooth to allow the air to pass freely and faster.

 

[stan*]

Inlets should be matched exactly to the head.
The reason why you shouldnt use the inlet gasket as a template is because its larger than the port itself, so using this will end up with the manifold larger than the port, which can make things worse than standard.

 

[Ad172UK]

Thanks for clearing that one up Stan.

I couldn't remember how the article went.

 

[sideways danny]

Thanks for clearing that one up Stan.

I couldn't remember how the article went.

wasn't a great article TBH

 

[Ad172UK]

I wish they'd do an article on adapting motorcycle carbs to fit a car engine to be used as throttle bodies - lol

Or is that too much to ask?? :rasp:

 

[172Ben]

Can be done, R1 carbs have been used before

 

[Ad172UK]

Heard fireblade carbs are a good choice on the F4R's.

 

[sideways danny]

if you're going to use bike stuff, why convert carbs? just use bike ITBs. The manifolds i've seen aren't very good though

 

[172Ben]

I meant these type of things

http://cgi.ebay.co.uk/r1-throttle-b...Q5fVehiclesQ5fCarPartsQ5fSMQQsalenotsupported

 

[Ad172UK]

Dan you've worked in these mainstream companies.

Whats the majority of the iTB costs go towards?

Is it more Research and development, Engine management or the actual iTBs themselves?

 

[Ad172UK]

I meant these type of things

http://cgi.ebay.co.uk/r1-throttle-b...Q5fVehiclesQ5fCarPartsQ5fSMQQsalenotsupported

Don't do it to me :rasp:

Every time I come on this forum I start spending money in my head. If it was up to me I'd have loans coming out of my ears for what I'd like to do to the clio!

 

[sideways danny]

Dan you've worked in these mainstream companies.

Whats the majority of the iTB costs go towards?

Is it more Research and development, Engine management or the actual iTBs themselves?

All of it. Quality hardware from the start pays dividends in power, and all running in general. Anything but Jenvey TBs are normally a s**t to balance. A well developed loom may seem expensive, but if you try to build one from scratch, you'll make little saving, and the end result will unlikey come close. Engine management if a fair chunk of the cost.