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csweatherston

posted on 11th Sep 06 at 17:58

UPDATE - hopefully buying alex gsi's engine now complete c16xe :D


James R

posted on 10th Sep 06 at 22:37

Do you have any idea how "rough" a rough finish is on the head?

Polishing the inlet before the fuel goes in will be fine, and how you'd get a polished finish on the inlet anyways.

The finish you're aiming for is similar to rubbing the port with some 600 grit wet and dry, which I think's pretty smooth not like a gravel drive.

Gary has done several heads for me, his work is brilliant, but think you have to see it know what rough means

Also the upper inlet can be polsihed, the transition to the on to the rougher sruface woudl generate suffient turbulent flow to allow a good mix.


L30 SCT

posted on 10th Sep 06 at 19:53

quote:
Originally posted by James R
quote:
Originally posted by L30 SCT
polishing the inlet manifold is not good as it causes the fuel to go into droplits.


the fuel will go in to drop lets before the the fuel in injected right at the bottom of the inlet straight on to the back of the valves???:thumbs: good one
Yes flowing it out will help, but it's faily difficult to, and woudl you really feel the 0.5BHP you'd get??


where did i say that it would happen in the inlet manifold?

i said by polishing the inlet manifold causes it to happen.

flowing it wouldnt help as the air coming in need some sort of friction causing it to mix the fuel and air. this is why when the head is polished the inlet valves are left a bit ruff. it was gary from migweb that told me the above


James R

posted on 10th Sep 06 at 18:55

quote:
Originally posted by L30 SCT
polishing the inlet manifold is not good as it causes the fuel to go into droplits.


the fuel will go in to drop lets before the the fuel in injected right at the bottom of the inlet straight on to the back of the valves???:thumbs: good one
Yes flowing it out will help, but it's faily difficult to, and woudl you really feel the 0.5BHP you'd get??


Dave A

posted on 9th Sep 06 at 20:04

yes it will fit. no need for modifying oilways etc...


csweatherston

posted on 9th Sep 06 at 19:56

dave - because i have just been told by someone that it wont fit, i was double checking....


L30 SCT

posted on 9th Sep 06 at 19:51

polishing the inlet manifold is not good as it causes the fuel to go into droplits.


Dave A

posted on 9th Sep 06 at 19:40

csweatherston:

you have asked all this before, why ask again?


ainsley_brader

posted on 9th Sep 06 at 18:51

quote:
Originally posted by csweatherston
a mantzel bolts on to the 'rough casted' lower inlet tho


polishing of the inlets isnt all that tbh you need some turbulence in the inlet. Polishing of the exhausts is more important.



[Edited on 09-09-2006 by ainsley_brader]


csweatherston

posted on 9th Sep 06 at 17:47

a mantzel bolts on to the 'rough casted' lower inlet tho


Dean_W

posted on 9th Sep 06 at 17:44

A mantzel inlet makes a hell of an increase on these engines. This is not polished, it makes a shorter inlet tract. It's the length of the inlet and the bends that are no good.


csweatherston

posted on 9th Sep 06 at 17:35

does a polished port make much difference??...
as most people are using a standard lower inlet which has 12" or so of unpolished casting........


James R

posted on 9th Sep 06 at 17:27

interchangable


L30 SCT

posted on 9th Sep 06 at 17:19

well i sent it away to get ported and polished thinking i had bought a c16xe head but i found out it was the x16xe so just going to use it as i have been told it will work fine


csweatherston

posted on 9th Sep 06 at 17:04

any reason?


L30 SCT

posted on 9th Sep 06 at 17:04

i am putting an x16xe head on my c16xe block


csweatherston

posted on 9th Sep 06 at 17:03

will i be able to put a c16 head on my x16 block??..is it a straight swap??

on the sbd site, theres a modified head oil way??.... these any good?