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  1. #1
    Member casterbased's Avatar
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    Icon10 old school na all the way

    i know 2mm is the max for the 8v head

    but

    i want

    12:1 comp

    twin 40mm webers

    and methanol

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    how do i get the comp up cheap, 2.5mm?

    will sound and smell good
    2008 Fiesta XR4 "ST150"
    -Cosworth cams, Cosworth intake manifold, CIA "K&N", Dream science, De-Cat, Eibach, Bilsteins, White Line sway bar "rear", EBC Rotors and pads, Goodridge brake lines, OZ Racing wheels, Toyo R1R

    1964 S2a Land Rover LWB
    -Served with the 1st Australian Task Force, Vietnam, original condition

    1994 S3 205 GTI
    -3L 406 V6 Conversion

    2009 Husqvarna TE510
    -Blinged

  2. #2
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    Quote Originally Posted by casterbased
    i know 2mm is the max for the 8v head

    but

    i want

    12:1 comp

    twin 40mm webers

    and methanol

    how do i get the comp up cheap, 2.5mm?

    will sound and smell good

    You could buy my engine, see the ads section.
    You will find this to be the cheapest option the long term, believe me!
    Graham

  3. #3
    1000+ Posts Dave's Avatar
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    Quote Originally Posted by GRAHAM WALLIS
    You could buy my engine, see the ads section.
    You will find this to be the cheapest option the long term, believe me!
    Graham
    This sounds like the smartest move as this engine was built properly - no dodgies like shaving the head so much. You cant shave a head that much it will warp.
    Dave


  4. #4
    1000+ Posts Wildebeest's Avatar
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    Default Old School...

    Quote Originally Posted by casterbased
    i know 2mm is the max for the 8v head

    but

    i want

    12:1 comp

    twin 40mm webers

    and methanol

    how do i get the comp up cheap, 2.5mm?

    will sound and smell good
    Casterbased,
    Have you ever had anything to do with methanol? If not get in touch with some of the old speedway mechanics, they will put you right.

    To use methanol fuel you will need to replumb your fuel supply system.
    Fuel lines and fittings will need to be doubled in size, methanol runs through pipes etc like water. It has a greater surface tension.
    Your Weber 40's will require a great increase in jetting, 100%. Emulsion tubes, air bleeds and float needle and seat valves will need to be sorted, most of it by "suck it and see".
    Methanol can have an effect on rubberised fuel pump diaphragms and other bits. My old mate "Buck Iron Balls" siphoned some methanol from a drum, he managed to get a mouthfull. His false teeth almost melted in his mouth!

    The smell? Oh yes, yes! That added to your namesake castor based oil ummm.

  5. #5
    1000+ Posts PeterT's Avatar
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    You could buy some Mi16 flat top pistons, skim the block and liners, and take 2mm off the head, and use a thinner copper gasket. This would get you 12:1. But why would you, when you can buy Graham's engine so cheap? It's already got forged pistons and a big valve head.

    Methanol also causes blindness. I'm not sure why you'd want to use it. You'd have to have injectors twice as big, double size fuel lines, double capacity fuel pump, etc. Darren used to run on 98, but you could always run on BP100. It has an octane rating of 118.

    '92 205 Mi16
    '90 Mi16x4

  6. #6
    Member casterbased's Avatar
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    Default

    Quote Originally Posted by Wildebeest
    Casterbased,
    Have you ever had anything to do with methanol? If not get in touch with some of the old speedway mechanics, they will put you right.

    To use methanol fuel you will need to replumb your fuel supply system.
    Fuel lines and fittings will need to be doubled in size, methanol runs through pipes etc like water. It has a greater surface tension.
    Your Weber 40's will require a great increase in jetting, 100%. Emulsion tubes, air bleeds and float needle and seat valves will need to be sorted, most of it by "suck it and see".
    Methanol can have an effect on rubberised fuel pump diaphragms and other bits. My old mate "Buck Iron Balls" siphoned some methanol from a drum, he managed to get a mouthfull. His false teeth almost melted in his mouth!

    The smell? Oh yes, yes! That added to your namesake castor based oil ummm.
    nothing beats the smell of a two stroke running caster based oil, some one gets it
    2008 Fiesta XR4 "ST150"
    -Cosworth cams, Cosworth intake manifold, CIA "K&N", Dream science, De-Cat, Eibach, Bilsteins, White Line sway bar "rear", EBC Rotors and pads, Goodridge brake lines, OZ Racing wheels, Toyo R1R

    1964 S2a Land Rover LWB
    -Served with the 1st Australian Task Force, Vietnam, original condition

    1994 S3 205 GTI
    -3L 406 V6 Conversion

    2009 Husqvarna TE510
    -Blinged

  7. #7
    1000+ Posts PeterT's Avatar
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    I missed the bit about 40mm Webers. Why would you restrict it with that? The choke size would bring them down to 34-36. You'd need to have at least 45mm Webers or 40mm TB's.

    '92 205 Mi16
    '90 Mi16x4

  8. #8
    Member casterbased's Avatar
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    Default

    Quote Originally Posted by PeterT
    I missed the bit about 40mm Webers. Why would you restrict it with that? The choke size would bring them down to 34-36. You'd need to have at least 45mm Webers or 40mm TB's.
    what size were the dellortos on the 2L alfas

    i thought mine were 40mm
    2008 Fiesta XR4 "ST150"
    -Cosworth cams, Cosworth intake manifold, CIA "K&N", Dream science, De-Cat, Eibach, Bilsteins, White Line sway bar "rear", EBC Rotors and pads, Goodridge brake lines, OZ Racing wheels, Toyo R1R

    1964 S2a Land Rover LWB
    -Served with the 1st Australian Task Force, Vietnam, original condition

    1994 S3 205 GTI
    -3L 406 V6 Conversion

    2009 Husqvarna TE510
    -Blinged

  9. #9
    1000+ Posts Dave's Avatar
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    Quote Originally Posted by casterbased
    what size were the dellortos on the 2L alfas

    i thought mine were 40mm
    They may have 40mm throats but as peter said for the carbs to work they need 34/36 mm chokes (venturis) for this size engine - 36mm choke is the biggest you can have in 40mm carbs. If your serious you should go with throttle bodies.

    Dave


  10. #10
    1000+ Posts Wildebeest's Avatar
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    Default Old school etc

    Quote Originally Posted by casterbased
    nothing beats the smell of a two stroke running caster based oil, some one gets it
    casterbased, make that castor based oils, as in castor oil, ugh!

    Caster is the front wheel alignment on a car or casters on furniture.

  11. #11
    Member casterbased's Avatar
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    what about quads off a 4a 20v, and match it up to the 2L camira injection that uses the map sensor
    2008 Fiesta XR4 "ST150"
    -Cosworth cams, Cosworth intake manifold, CIA "K&N", Dream science, De-Cat, Eibach, Bilsteins, White Line sway bar "rear", EBC Rotors and pads, Goodridge brake lines, OZ Racing wheels, Toyo R1R

    1964 S2a Land Rover LWB
    -Served with the 1st Australian Task Force, Vietnam, original condition

    1994 S3 205 GTI
    -3L 406 V6 Conversion

    2009 Husqvarna TE510
    -Blinged

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