Cost to go to 78mm stroke??, anyone have some numbers??? Options

[Mueller]

Seems like Jake will be out of reach for the next few weeks...so...anyone know the cost differance between staying at 71mm and upgrading to 78mm stroke?

my rods already need to be re-worked due to the pistons I'm going to use, so no loss there, I'm guessing new rods would be in order for the longer stroke....I have no idea what crank is going to cost, nor the rods....can a 1.8 crank be used so that I can at least sell my 2.0 rods and crank to help cover the additional costs??

[Jake Raby]

I can do it in my sleep guys... The clearance is nothing to worry about when you get all the parts from someone that KNOWS the clearances.

I don't use stock 2.0 rods for ANYTHING! 74mm stroke is no easier to build than a 78 with the right matching components. The problem to this point is finding THE person that can set you up with EXACTLY what works, clears, fits and won't break. If you buy many of the parts from establishments now you still have to clearance the rods, but where? How much do you take from them? Then you have to have them balanced!

Same goes for the camshaft.. How much of a reduced base circle? What will fit? How much is enough or too much lift??

The issue is having to buy a cam from one place, a crank from someone else, and rods from someone else- Thats about to become a thing of the past. (IMG:style_emoticons/default/blink.gif)

BTW- I wouldn't use a crank other than DPR if someone held a gun to my head. Email me for some pics of "Others" work.... I spin DPR cranks with my design to over 8,000 sustained RPM with no sweat. One of my new customers this year threw a counterweight off of a Demello crank that went clean through the case and through the body of his F prod 914! It took out 15,000 bucks of other parts with it! All cranks are NOT created equal! Alot of them are made from cores that would not clean up for a stock job... I send my cores in for the work to be done and throw 1/4 of them away in the process of looking for the best ones. Its not uncommon to find cracked journals, loose fitting flywheels and etc from the "Others"....... Been there and done that!

here are the prices you asked for

Crank= 485.00 (TI journals)
Rods= 280
Clearancing = Included with rod price (IMG:style_emoticons/default/boldblue.gif)
Camshaft= 175.00 (custom grind with reduced base circle designed for the heads being used as well as the crank/rod clearance)

Hell as far as the case clearancing goes if you buy the stuff from someone that puts their heart and soul into this you might even get a template of what to clearance and where to do it from! The clearance work is simple..

Building less than a 78 stroke is just plain a waste of time, this is super easy this way and give tremendous amounts of torque!

Ask DNHunt how easy it is to build when you do it my way... He knows first hand..

I can literally do it wearing a blindfold!

Patience guys... Patience... I'm working 18 hours a day trying to remedy these issues!