Northy
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| posted on 5/3/03 at 06:17 PM |
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The dissy has no mechanical advance. So what do I do?
Oh, and Webers will set me back ~£500
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing! 
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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Mark Allanson
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| posted on 5/3/03 at 10:11 PM |
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Piper Tuning Manual says...
length ram pipes in inches = (228xinlet valve timing in degrees) / RPM of max power less 500RPM
The result can be divided by 3 or 5 to accomodate the ram pipes. the length of the ram pipes is from the valve head to the trumpet end.
The clearance from the end of the trumpet to its opposite face in the air box must not be less than the bore of the choke.
Now, does anyone know the inlet valve timing for a 2.0i Pinto????????????
Calculator in sweaty palm poised for action!!
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CairB
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| posted on 5/3/03 at 10:23 PM |
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According to Haynes - Inlet:
opens 24deg BTDC
closes 64deg ABDC
gives a duration of 268 deg.
I think that my Kent FR34 is about 263 duration.
Press them keys 
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Mark Allanson
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| posted on 5/3/03 at 10:34 PM |
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11.11" assuming max power rpm of 6000, the standard sierra one looks much longer, but divided by 3 would give 3.7" Seems very short to me - what
does the panel think?
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CairB
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| posted on 5/3/03 at 10:46 PM |
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I suggest that you follow your nose, take your pick and make something to regulate and get the charge into the engine. I did, it works to a reasonable
extent with good drivability, not bad acceleration and nearly 30mpg to boot when given some hammer. If you don't like the result you can always pond
it and try the MKII. During my build I found that I could spend a lot of time pondering and with the aid of my son saying is that all you've done
this week I'd get the drift and get on with it.
By the way, whichever way you choose I bet you get half way through and convince yourself that the other way was better.
I wasn't sure that the injection and ignition mapping would be OK but it seems to be. Thats why I'm looking at fitting an O2 sensor to see if thers
any more to be had my changing the mapping.
Good luck with it - whichever way you go.
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Mark Allanson
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| posted on 5/3/03 at 10:59 PM |
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Bugger the calculator, going to make my own throttle chamber and make the rams as long as they will go without sticking out of the side of the car!
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Northy
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| posted on 6/3/03 at 07:58 AM |
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Mark,
You MUST post pictures! It sounds like a fine plan to me
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing!
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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Northy
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| posted on 6/3/03 at 07:58 AM |
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Mark,
You MUST post pictures! It sounds like a fine plan to me
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing!
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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rgv_stu
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| posted on 6/3/03 at 09:33 AM |
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dissy off a 1600 carb is what you want for webers.
http://www.migweb.co.uk/forums/showthread.php?s=&threadid=65621
what about one of these manifolds ?? see thread / link above
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Northy
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| posted on 6/3/03 at 06:24 PM |
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Which way up does the lexmaul one go? I need to deduce the height of mine.
The one half way down the page looks interesting.
Thanks
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing!
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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fastenuff
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| posted on 6/3/03 at 08:08 PM |
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I have a doc from this site (www.sdsefi.com/techinta.htm) which shows a home made EFI system, take a look and do whatever. (yes i do spend to much
time online, I admit. suspension design is waiting)
Ingmar
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Northy
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| posted on 10/3/03 at 10:31 PM |
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Progress?
Mark,
Any progress yet?
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing!
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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eddymcclements
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| posted on 11/3/03 at 08:54 AM |
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I've just finished my plenum chamber. I based it on the original Toyota design, but lowered it to fit under the bonnet. It's made from four
90-degree exhaust manifold bends for the inlet runners, a length of 3" pipe for the main plenum body and a 10mm plasma cut flange (drawn around a
stock inlet manifold gasket and plasma-cut & ground to shape).
Pictures are here and here
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