XE Head mods

[Anonymous]

Hi,I was given an XE AHXflow by my son,as it was the only thing left worthwihile saving off his car after a "joyrider",joyful for some,hit a brick wall full on with the cops right on his hammer. Am I right in my understanding that only the ehaust side needs cleaning up and to leave the intake side of the head pretty much alone .Thanks in advance for the helpful advice,regards Bill.

 

[xctasy]

Dunno why some else hasn't answered sooner!

The head has brilliant approach angles, great combustion, perfect plug placement. Do nothing but a de-dag of the exhast ports, and insure there is a port mismatch to the header tube so gas wont return into the head on over run. For carb engines only, at the intake side, get a length of 7/16' or 10 mm alloy plate, some longer grade 12.9 bolts and make a port mis-matched intake flow inducer with a 30 degree cut to reintroduce petrol into suspension works wonders. The plate must match the intake perfectly, and then create a disruption right at the head without impeating flow. Any extra performance comes from cam lift and duration. Porting the intake is a mess up most of the time...fuel must stay atomised, and polishing ruins this, power, and brake specific fuel consumption.

 

[Anonymous]

Hey Xecute,

Are You refering to the Water Fall effect where the flow causes little waves of turbulance along the intake port floor? I thought so

I wish one of you guys would grab a junk Crossflow head and cut it in half so we could see a cross section of it.
I would love to see the inside.

John

 

[xctasy]

:idea: Sounds great. I'll get my friend at work to buzz up the drop saw, and sell the remaining four cylindes of the head to DGR8TIM for his Tempo/Topaz

 

[Anonymous]

Thanks for the info,I was given another alloy head today if it isn't any good I'll chop it in cross section,then find someone with a dig cam.Regards Bill

 

[Anonymous]

Bad luck the head is an XF and ingood nick so "no choppy"
regards Bill.

 

[xctasy]

Guess its up to an NZer to make the Supreme Sacrifice. Don't wince, Floridaphatman, there are planty more auto there. The XE alloy head in my basement must die, so others might live! .

Hey Floridaphatman, did you get my message?

 

[Anonymous]

Good evening XECUTE,
I was reading your post in relation to constructing an interference plate for installation in the carby 4.1s. By any chance do you have any drawings or photos as I would interested in trialling such a mod. In recent years a similar mod worked well on a work mates 4V 351C.

Cheers

Arch

 

[xctasy]

Try these photos on intake spacers and port mismatching



http://www.inlinepages.com/~fordsixpics/xe_carb_adaptor.jpg

http://www.inlinepages.com/~fordsixpics/xe_carb_impco.jpg


The plates are 11 mm in depth, and just bolt on to the head with two gaskets. A 30 degree saw-cut chamfer is made on the annular part which stops reversion of the light propane mix. Its like barbs on a fish hook...the way in is free flowing but slighty rough and mistmatch, the way backwards (during reversion pulses from my mighty 252 degree cam) is rough.

No other photos, but you can see the plates.

 

[Anonymous]

Xecute, I just opened a bottle of 21 year old single malt and I intend to toast your sacrafice.

Try to keep all your fingers this time.

John

 

[xctasy]