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View Full Version : Hondaline Airfooler 300cc compression ratio?


TtownJoeShow
03-15-2007, 10:50 AM
Hey, just as the title, i have searched for an hour and can't find anything!!
brutal!!

any help would b awsome!
TtownJoeShow
03-17-2007, 03:11 PM
nobody? damn, id figure it out but i don't wanto take my running trike appart...could anyone measure from the top of the exhauste port to the top of the cylander on a hondaline 300cc jug? atleast i think thats what i need lol
Huffa
03-17-2007, 03:21 PM
I have the directions to a 300 kit but they have been sealed (a collector thing, ya know)) for over 23 years and I would hate to open it up to see if it mentions it.

You think it would?

I have a spare 300 cylinder too, I'll see if I can do that.
Bryan Raffa
03-17-2007, 05:59 PM
Oh.. open it up and see what it says.. how mutch could it really be worth still sealed??? $10 more...maybe
Huffa
03-17-2007, 06:26 PM
Oh.. open it up and see what it says.. how mutch could it really be worth still sealed??? $10 more...maybe

a couple hundred probably :D
200xman
03-17-2007, 07:26 PM
I'll save you the pain of breaking the seal. My 300 instructions don't list compression, only tightening torques. The kits were designed for the 83-84 R's so I would think the compression would be close to what the same year 250 would be.
Bryan Raffa
03-17-2007, 07:32 PM
a couple hundred for ..tightening torques:lol: :crazy:
team-red-rider
03-17-2007, 07:41 PM
they also had redones for the 1st gen R
GPracer2500
03-17-2007, 07:48 PM
I'm curious why you want to know.

I've always found that knowing a measured dynamic comp figure is more insightful than knowing a calculated static comp figure. In other words, I'd rather know an engine has 180psi over knowing its got a 10:1 piston.

Just curious.
TtownJoeShow
03-19-2007, 12:41 PM
I'm curious why you want to know.

I've always found that knowing a measured dynamic comp figure is more insightful than knowing a calculated static comp figure. In other words, I'd rather know an engine has 180psi over knowing its got a 10:1 piston.

Just curious.

yes i guess your right, makes sence...but the ratio kinda tells how high of performance the engine is...i guess its just useless info, but i like to know that crap lol

oh and don't bust them directions open, they are probly verry rare sine damn near everyone woulda just opened the box and thrown them in the garbage first hahaha
keep up the good work
nate b
03-19-2007, 01:46 PM
If you got it all bolted together its very easy to measure the comp ratio. It is also a very good thing to know.
TtownJoeShow
03-19-2007, 07:28 PM
don't, i need to know how far the piston travels once all the ports are blocked off? if any, the exhaust port would b the highest...
nate b
03-19-2007, 10:03 PM
no...............
TtownJoeShow
03-20-2007, 11:49 AM
if you got that motor all together, and know the excact cc displacement, get a good burret or something that can measure cc's acuratly and pull the spark plug, fill your mearsuring device with (I use tranny fluid), turn motor to tdc, pout in liquid until its flush to bottom of threads, find out how much you put in.

then take total cc of motor+ how manny cc's you put in chamber and divide by the # of cc's you poured in= comp ratio.

put a rag over plug hole, kick over a few times, install plug and give er.

might have to pull gas tank to get a good look at how far your filling it.
NATE


Thanks man!

i still can't believe that the Comp Ratio is not mentioned on the internet lol weird