Tight on space, gauze filters or px600 filter?

[TheConverted]

Evening guys, I'm swapping from bike carbs to DHLA 45s and I have approx 70mm to the swaged tap on my firewall.

I've orders some 25mm velocity stacks. But not sure which way to go for filters.

Either afm4563s or the px600.

As it is now.


And a mock up from earlier there 48mm stacks for reference.


I have a px600 back plate for the dhlas but I think I have 110 px on the bike carbs I could get the 55mm one or might even get the 80mm flat one in there. Maybe I can bend it abit to fit.

Which will Rob the least power. The gauze afm4563s or the px?

http://www.mattlewisracing.co.uk/product.php/2875/...matt_lewis_racing


Thanks I'll check the actual measurements in the morning.

[gazza285]

I don't know about air filters, I never used any on my 45s.

What are you expecting from the change from bike carbs to sidedrafts? I always found sidedrafts to be poor on part throttle openings, with shocking fuel economy. Sounded great flat out though.

Also, lets see some more photos of that Fez.

[TheConverted]

gazza285 said:

I don't know about air filters, I never used any on my 45s.

What are you expecting from the change from bike carbs to sidedrafts? I always found sidedrafts to be poor on part throttle openings, with shocking fuel economy. Sounded great flat out though.

Also, lets see some more photos of that Fez.

Im not expecting to get more power , better sound hopefully.

the bike carbs Im sure can be made to work but there isn't anyone local to me that wants to work on them. there super rich (9.5 -10.0) on high load wot. or lean on part throttle (15.0-16.0). ive tried allsorts of combinations of setting to no avail. I also just cant get the fueling curve to match the full rpm range. rich low down lean in the high rpms (I'm limited by this) even with the air correctors blocked.

they are perhaps to big as the 40mm chokes. although as the CV type carbs it shouldn't be that much of an issue. don't get me wrong it drives very well. and make decent power, but theirs defiantly room for improvement.

these are 6 progression hole dhlas so the the part throttle should be good as well as being suited to 16v engines. the zetec has a flat spot on normal webers you need the G code 5 progression hole type. and have the extra adjustment should help me get it set closer.

fuel consumption? its a toy and its only 750KG so not to fussed. it does about 28-30mpg now on the bike carbs. and who dosnt want twin 45s

could be talking out my arse of course and it might be rubbish on them.

https://www.pistonheads.com/gassing/topic.asp?h=0&... loads of pictures here.

[Zener]

Back in the day it was always a known that the DHLA's meter fuel better low down than the DCOE equivalent , I was always a Weber DCOE fanboy lairy Ford X flows etc

[gazza285]

TheConverted said:

https://www.pistonheads.com/gassing/topic.asp?h=0&... loads of pictures here.

Tidy.