Blown Fan

[Mexicano]

roost: The baerings are Ceramic Bearings, very strong!!....even this, I have send them back to the manufacturer for review and change the cages if necessary.

Regards,

 

[Astrolopitec]

Yes Juan, it is.
Got it from Dave's as yours....hecharged me extra $75.00 Usd. for porting the cylinder and looks pretty well done.

He's got tons of first hand experience with strokers.
If your modified C20 pipe turns out to be a good match. You are going to have trouble keeping your front wheel down.
BTW. You might have to lower the squirts down 3-4mm to fit in the crankcase.

 

[brookespeed]

what is a squirt?

 

[Mexicano]

He's got tons of first hand experience with strokers.
If your modified C20 pipe turns out to be a good match. You are going to have trouble keeping your front wheel down.
BTW. You might have to lower the squirts down 3-4mm to fit in the crankcase.

Do You mean piston skirt?...... the lower part of piston?

 

[tiba_karotsu]

mhr

 

[Astrolopitec]

Do You mean piston skirt?...... the lower part of piston?

Sorry for my spelling. Yes I meant skirt.

 

[Eoin70]

The crankshaft, the cylinder & piston and the head arrived:

there is an arrow on that piston crown and its drawn in the wrong way !!

 

[Mexicano]

Eoin: Nop..the black thing is nothing but a paint mark from manufacturer, the arrow for the exhaust direction is stamped on the piston crown (not visible at the pic) but it is pointing to the opposite side of piston "windows", so it is right....

Regards,

 

[brookespeed]

Sorry for my spelling. Yes I meant skirt.

The piston skirt should be ok, it's the spigot of the cylinder that may be too long. But his cases are not conversions like ours. His came stock with the longer stroke and bore. Rather than cut the spigot I ground out some room in the cases. Had to fix a small mistake with JB weld but it's held up fine so far. I think next time I'll cut the spigot a bit though as you suggest.

 

[Astrolopitec]

Yes I meant the cylinder skirts. Not the piston skirts.
I did not know that the cylinder skirts were called spigots .

Brookespeed.
I forgot.... What motor are you running ?

Thanks.

 

[Mexicano]

brookespeed is right, Juan.....my cases are bigger than yours...my guess is I wouldn't need to cut the cylinder...maybe I will need to machine the cases just a little to accept the larger cylinder and cranckshaft stroke....now I'm waiting for the new cases....2 more weeks!

 

[brookespeed]

I think the 47mm stroke cranks may need some grinding on the cases even for the motors that normally run a 42mm stroke. I was told the 45mm stroke cranks do not require modification.

I built a zuma stroker with a 42mm crank and a 54 bore. It's been run but it didn't run well so I have been working on it when I can. I just welded up a ghetto pipe and plan on firing it up to check the timeing sometime in the next week. we'll see.

 

[Mexicano]

brookespeed: Yes, the cases need to be grinded for 47 m.m., I did it in my old cases for 48 m.m. crank, grinded 1.2 m.m.

 

[Mexicano]

The New Ceramic Bearings arrived!..here they are!!!:

Now I'm closer to assembly my new engine.

 

[Mexicano]

I got my new carters....next step is to grind them to acceot the bigger cylinder and crankshaft:

 

[Mexicano]

Finally I started my new engine,this pic shows the bearings indside the cranckshaft:

Checking for the crankshaft tolerances:

The BEST TOOL:

Checking for the crankshaft and cylinder together:

Crank installed and sealed carters:

Crank ready:

An inside view:

Front seal:

 

[Mexicano]

Oil injector and gear:

HPI ignition plate:

Ready for the cylinder:

Installing the cylinder:

Checking my port timing one more time:

Head installed:

Electric starter gear:

Manifold and reed valve:

Checking for air leaks:

 

[Jeffo]

very nice, BUT the starter gear is going to demolisch ur crank again for sure...
Those are the things u can bether leave @ home if u want to make rpm's ..

 

[Mr.Aerox]

nice, but isnt that manifold a bit too long? make some videos of your bike running!

 

[Mexicano]

very nice, BUT the starter gear is going to demolisch ur crank again for sure...
Those are the things u can bether leave @ home if u want to make rpm's ..

I hope no...... anyways I will evaluate if use it or no....will tell you later.