HT Engine Specifications



arkives1

Member
Joined
Oct 25, 2009
Messages
219
ht engine specs

Got the thread on NT Carb Tuning Basics started.

I hope that all of this isn't a waste of time.

... Steve
Great idea and wonderful work so far Steve. I'm relatively new to all this information so your posts are extremely helpful to me. The video on 4 stroking was excellent as I would have noticed the difference in sound but would have no idea what was happening or why. Thanks a lot for you efforts.

Woody
 

CaptJ

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Joined
Nov 7, 2009
Messages
58
THE CRASH COURSE FOR MOTORED BIKES NOOBS
I found this today, the most informantion I've seen.
Awesome post.
 

AussieSteve

Active Member
Joined
Oct 28, 2009
Messages
1,746
From what I've read, pulling the carby apart is a very good idea. Some guys have found the main jet and/or needle jet loose in the bottom of the float bowl fresh from the factory.

... Steve
 

AussieSteve

Active Member
Joined
Oct 28, 2009
Messages
1,746
No, with NGK, the higher the number, the cooler the plug. ie. A B5HS is hotter than a B6HS.
(Just thought I'd throw that out there.)
 

HeadSmess

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Joined
May 17, 2010
Messages
3,006
bloody hotter...colder.... i still get confused :(

if its black but not cause its rich, the plug is too cold, right? and hotter plug has less ceramic so it heats up more, burning off excess oil/carbon..which is the black....

keeping in mind the engines tuned...

yes?

ok...my actual addition here was

PORT TIMING

Ex : 140 degrees. open

In : 106 degrees. open

piston induction : 120 degrees? not very important anyway.

EX port area : approx 260mm2

and a good program for tuned pipes that ive used a few times on other engines...

http://www.mh-aerotools.de/airfoils/javapipe_en.htm

measurements are as close as i could measure, and are really only a guide... it will only effect the pipes performance by a few hundred rpm either way...
 
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