Wow, you weren't kidding about the clean part. Nice work! You gonna send me an image of the PSI?
How do you do the transfer work? Will a dremel fit, or do you have a 90 degree one.
Perfect timing, I am doing an 026 now as a gift and will port it. I have never messed with transfers before.
and if all works well, I will do my old 026 the same way later.
I've found that raising the upper transfers a few degrees with other mods allows an engine to hold the rpm in the cut. The higher the exhaust and transfers go in relation to each other the high the rpm seems to go. I'm sure that there's a point when it starts going the other way though. Too much exhaust without the compression to support it and an engine is just a screamer that has no useable torque.
So would it be correct to say that maintaining the same blowdown by raising the exhaust and transfers together will produce gains in both rpms and torque, up until the point that the height of the exhaust lowers compression too much?
forgot to ask: what fuel line & filter fit. Have to change them anyway, may as well upsize.
and +1 on the 'what carb mods' question.
Might be time to look into the 90d tools.
So would it be correct to say that maintaining the same blowdown by raising the exhaust and transfers together will produce gains in both rpms and torque, up until the point that the height of the exhaust lowers compression too much?
I knew I shoulda kept that damn saw....:biggrin:
Sorta ya. Just don't go raising things too high. The transfer timing can have a fine line, its not hard to go too far.
you know you raised the ex too high when you reach the squish band.:hmm3grin2orange:
Very nice reading,thanks.I have a free straight gassed 026 on my bench which I will be porting in a month or so.I will just be widening the intake and exhaust ports,opening up the muffler and no base gasket.I do all my porting now with hand files and wet/dry sandpaper.The first saw I ported was an 026 heres a pic of the ports(don't laugh too hard).
No laughing here. That looks great. I can appreciate the work it takes to do all that by hand.
I add more and better tools every chance I get. I bought a Foredom knock off from Harbor Freight a few days ago. It's a 1/4 HP with a foot pedal. When I first spun it the thing sounded like crap. Like all their stuff it needed some love......I took it all apart, cleaned and lubed it. It works great now. For 60.00 shipped, it's way better than a flex shaft Dremel tool.
On the carb question, has anyone tried boring one out ?
Steve
Do share !!
Steve
No laughing here. That looks great. I can appreciate the work it takes to do all that by hand.
I add more and better tools every chance I get. I bought a Foredom knock off from Harbor Freight a few days ago. It's a 1/4 HP with a foot pedal. When I first spun it the thing sounded like crap. Like all their stuff it needed some love......I took it all apart, cleaned and lubed it. It works great now. For 60.00 shipped, it's way better than a flex shaft Dremel tool.
Randy, if you clean up the inside of the bore what do use to do so? The cylinder I am workin on doesn't have any transfer so no need for acid I just want to make it look like it has never had a piston in it without honing it. If it doesn't matter then I won't worry bout it. Thanks!
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