new hot rods purchase ?

[jscharphorn]

Don't read it then taco boy, Plenty of other posts you can read ..

[Pastrykiller]

Every 4mm hotrods i've seen already comes welded out of the box. Some builders will reweld it and deem it a deep penetration weld.

[sleeper06]

Anyone who can really manipulate a puddle with a welder can do trick to it is not much filler if at all and end with no slag, there is nothing wrong with fusion welding it, I have seen cranks straight from hot rods with slag hitting the bearings I have tried preheating cranks before welding I have also done them cold it makes a difference in the heat needed to start but has never made a difference in a true stand for me

[jscharphorn]

OK, Thanks for tips and info.

[oldskool]

Just so you know, rod length does not determine stroker crank. A +4 mil crank can have different rods. Rod length does come into play when setting motor up.

[jscharphorn]

So for someone wanting to get his stock cylinders ported and a 4mill crank would I want the 115 rod or the 110 ?

I want a play/ dune bike but hold its own when drag racing.

Also with the 115 rod do I need to get different pistons ?

I plan to get a cool head, just do not know what brand yet.

Edited December 26, 2014 by jscharphorn

[special06shee]

115

[special06shee]

Noss heads are very nice

[registered user]

So for someone wanting to get his stock cylinders ported and a 4mill crank would I want the 115 rod or the 110 ?

I want a play/ dune bike but hold its own when drag racing.

Also with the 115 rod do I need to get different pistons ?

I plan to get a cool head, just do not know what brand yet.

not that you couldnt use a variety of different rods but im thinking 115 is the rod used most on the 4mil. looks like 795 wiseco is what you would use unless you want to put in a spacer plate

[BANSHEE HP]

There is no variety, theres 110mm stock rod length or 115mm "long rod".

 

With the 110mm rod with a 4mm stroke and stock pin height piston you can either use a spacer plate or cut into the dome the 2mm youve added with stroke.

 

With the 115mm "long rod" with a 4mm stroke and the 795 series piston with a 5mm higher pin height you have the same options to make up the 2mm of stroke, spacer plate or cutting deeper into the dome. Then at .080'' (66mm) you go to the 573 series piston and make up less in the dome because its +6mm higher pin height than stock.

 

with either setup, the proper porting and cutting the dome deeper are the better/correct way to go over a spacer plate.

[registered user]

if you think outside the box theres several rods that can be used. 99% of people are better off going with the cookie cutter 115 hotrod 4mil crank. its a hassle free drop in procedure. hek even a parts changer wouldnt have any trouble. for the other 1% like myself that want to do things alittle different, theres better stronger rods than the 115 hotrod run of the mill stuff.

[BANSHEE HP]

Preach brother. School me on what I haven't figured. That's how this goes,remember I had to walk you through the basics of cub cylinders and pistons the other day. Tell us all how the 1% would setup a motor.

[possum]

lol^^

[registered user]

you didnt walk me through anything. i inquired about the pin location on that new piston beause i ASSUMED calvins cylinders were cast for the different length rods. if i had read the fine print on the cp site i would of realized the cylinderes ARENT cast for longer rods and thus i would have known the reason for your piston. im new to the banshee scene but this aint my first rodeo with 2stroke engines

[rubberneck]

subscribed