Honda Spree and Elite 50 Forums

Just watch them temps, maybe invest in a cylinder head temp gauge. Grind the clear coat off . I'd let it burn off then paint with the high temp. I just realized you, me, and maddog are the only ones replying to this thread . Kinda strange.

Chicago Ben wrote:

evilone wrote:http://www.hondaspree.net/phpBB3/viewto ... 9&start=45

Read through pages 4 and 5. The "case porting" to match the cylinder boost port is described there. Polini is bolt on but the Malossi cast iron has a bigger boost port. If you don't port the cases to match then the rear of piston might overheat and cause a problem.

Ok so I just read through that and I understand how to port it but didn't trafficjamz do that because he was going with a bigger crank (stroker) setup?

Boostport matching had nothing to do with my ministroke crank.

If you get the new bore and the boost port opening on the jug is WAY bigger, then I think port matching in a no brainer.

Why would malossi not make it not match on purpose ?:*:
I think that if VT cycles is saying you can get away without doing it.
But if you are building an engine why not do it right.

evilone wrote:Just watch them temps, maybe invest in a cylinder head temp gauge. Grind the clear coat off . I'd let it burn off then paint with the high temp. I just realized you, me, and maddog are the only ones replying to this thread . Kinda strange.

I am going to get a temp guage... just a simple one where the sensor replaced the plug ring. Regarding that pipe, yeah I'll just let it burn off then I'll coat it like 5 times with high temp... bbq refresh style.

Trafficjamz wrote:Why would malossi not make it not match on purpose ?:*:
I think that if VT cycles is saying you can get away without doing it.
But if you are building an engine why not do it right.

Ok ok ok. I know you guys are right, I am going to pull the engine and not only match it but I found a guy over here in Chicago to give the engine the 'silicia sand' blast treatment for 60 bucks. You guys just wait for my blingtastic engine posts.

Chicago Ben wrote: I found a guy over here in Chicago to give the engine the 'silicia sand' blast treatment for 60 bucks. You guys just wait for my blingtastic engine posts.

Not rubbing it in but i bead blast mine for under $5, but i'm still looking forward to the build and results!

You should listen to the Evil One

evilone wrote:Not rubbing it in but i bead blast mine for under $5, but i'm still looking forward to the build and results!

How so cheap?

Chicago Ben wrote:

evilone wrote:Not rubbing it in but i bead blast mine for under $5, but i'm still looking forward to the build and results!

How so cheap?

Since were on the subject, I paid $0. Did it myself

yeah yeah, traffic i have been following your posts. looks sweet.

If I was back in Michigan this build would be much easier. I don't have all my tools in Chicago.

someone please explain to me... that boost port... is it's purpose for air/fuel to ride up behind the piston or is it for unused mixture?

Greetings:

Gordon Jennings can write a whole book about the boost port alone. I can write a few sentences:

The boost port is the first puff of mixture to enter the cylinder as the exchange cycle begins, and the last "intake" port to close. It is "pointed" at the exhaust port. Its function is to shoo the spent gases out the exhaust and establish a flow direction for cylinder emptying/filling to begin, while the transfer ports on each side funnel the majority of the exchange of fresh mixture for dead smoke.

Bad air out, good air in. When all is working correctly - at an optimal RPM - life is beautiful. (Scroll to the bottom...)

Somewhere between the Spree and the later AF series engines, Honda-san ordained that the boost port would more than quadruple in area. (12 x 6mm to 24 x 12mm) The Malossi cylinder is cut to the AF18E & later case port size, the Contesta has the same size as the AF16 and earlier. If you can operate a die-grinder, a Roto-Zip, a Dremel or in my case a Hacksaw, you can duplicate Honda's later case boost port design, thus increasing engine power output.

Chicago Ben wrote:

evilone wrote:Not rubbing it in but i bead blast mine for under $5, but i'm still looking forward to the build and results!

How so cheap?

Self serve booth rental in Plainwell, i have access to all the good stuff. I just thought $60 sounded a little high when it only takes 20-30 minutes at the most to do. But you gotta work with what you have.

Chicago Ben wrote:If I was back in Michigan this build would be much easier. I don't have all my tools in Chicago.

What tools you need? If you can drive up to Evanston & teach me how to clean a carb, I have access to some tools and an underground garage with ventilation. And beer.

evilone wrote:

Chicago Ben wrote:

evilone wrote:Not rubbing it in but i bead blast mine for under $5, but i'm still looking forward to the build and results!

How so cheap?

Self serve booth rental in Plainwell, i have access to all the good stuff. I just thought $60 sounded a little high when it only takes 20-30 minutes at the most to do. But you gotta work with what you have.

thats pretty sweet

Eft37 wrote:

Chicago Ben wrote:If I was back in Michigan this build would be much easier. I don't have all my tools in Chicago.

What tools you need? If you can drive up to Evanston & teach me how to clean a carb, I have access to some tools and an underground garage with ventilation. And beer.

carb cleaning is easy. thanks for the offer man once all these parts get in I may need to meet up with you with a case of beer and build this thing.

ps my typhoon exhaust came in from VT today. This thing is a work of art, I'll get pictures up later tonight.

it's beautiful! haha

Yes it is