I thought it might be a good resource to post up any port maps we've made in one thread for reference. Please include the manufacturer/model/part number/seller or any relevant info that you know. If you've made mods to the cylinder, please post details of what you did and what it accomplished. If you've got links to other port maps, please post those as well.
If anyone needs a little help making a port map for the first time, look here...
Port map of a 71.1cc Kit from Autotech355 (Carlos) on eBay. This kit fits as a replacement for the 1E40FM cylinder. May fit other applications as well. The stroke is ~41mm. The piston diameter is ~48mm. I didn't measure every little thing. I thought it was would make it more confusing that way. Let me know what you think.
Last Edit: Nov 22, 2017 8:46:50 GMT -5 by 90GTVert
Exhaust open 80 deg BBDC Exhaust close 80 deg ABDC Scavenge open 55 deg BBDC Scavenge close 55 deg ABDC
Exhaust~160 degrees, Intake~114 degrees
The "plan": Fabricating a 1.5mm spacer (between cylinder and crankcase) out of aluminum, and manually opening (grinding) the exhaust port upwards 1mm. Resulting in: Exhaust~180 degrees, Intake~130 degrees
Previous port maps were measured straight line on an unrolled port map. This was measured by chord width. To be able to compare a little easier to the other kits, measurement of the ex ports would be left aux ex : 7.3mm, ex : 30mm, right aux ex : 7.75mm.
Last Edit: Nov 22, 2017 8:49:31 GMT -5 by 90GTVert
Senna1Rossi: Thanks renagade281!
May 23, 2016 14:59:12 GMT -5
Fox: I don't really know how to say this but straight. I am Dave's Girlfriend Kellilee and bluntly and VERY SADLY he passed away early Tuesday morning. I know he would want ya all to know this. Thank You Brent for befriending my love he was very happy on here!
Jun 18, 2016 16:26:04 GMT -5
Fox: www.gofundme.com/29mgf6b8 I hope it is ok to pass on his gofundme page link. If not you will un-post it I'm sure. Thanks again all!!
Jun 18, 2016 16:31:18 GMT -5