This crank was prepared slightly different from our 88mm, 94.9mm and 105mm strokers by Castillo's Crankshaft Specialist. This time, Joe and Rudy modified a K20A2 86mm crank and destroked it to the new 82.5246 mm, 3.249" stroke by offset grinding down to the D-series 1.653" rod journal diameter. This will reduce bearing speeds compared to the larger 1.890" K, F and H rod journal diameter even moreso than our 94.9mm crank w/ B-series rod journal size. This crank will be teamed up with our 90mm custom JE's in one of our K24 blocks sleeved by ERL Performance netting a 2:1 r/s ratio in the 2100cc development motor for high rpm R&D. Brand new cam profiles were designed specifically for this combination: 13.72mm lift - 312.5 duration IN - 12.27mm lift - 312.5 duration EX.

-Ron

 

How much is all this work costing. What's the turn around. Very intersted to get started already on my new piston rod combo after my stuff blow ( hey it's going to happen haha!) PM me if you dont want to post


Castillo's

 

ijesus mio! you could chop some ribeye with those edges!

hot damn, keep us posted!

 

Give Joe a call at Castillo's: 714-523-0321

-Ron

 

joe and rudy castillo are some bad-*** ****'s. they do excellent work. they cut/knive-edge/balance some of my vw watercooled cranks i use. They have about a month turnaround time .

 

Depending upon how much work they have lined up and the condition of your crank, it could take anywhere from 3 weeks to 6 months. As far as having things off-set welded, expect it to cost around the price of a b16 swap. One thing for sure though, I've sent a pretty jacked up crank to them and they were able to restore it. Not cheap, and they were backed up with work at the time, but their work is nothing short of phenominal.

 

Just a slight clarification:

1. offset ground stroker/destroker

2. welded stroker/destroker

Two separate processes, not to be confused for one another. You go for #1 when your target stroke is attainable with the available material just by grinding to a smaller rod journal diameter. If not, you go with #2 to build up material to finish any stroke you'd like which is about twice the cost and takes considerably longer as there are many more steps involved in performing this process correctly.

-Ron

 

wow!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by edo &raquo;</TD></TR><TR><TD CLASS="quote">

Two separate processes, not to be confused for one another. You go for #1 when your target stroke is attainable with the available material just by grinding to a smaller rod journal diameter. If not, you go with #2 to build up material to finish any stroke you'd like which is about twice the cost and takes considerably longer as there are many more steps involved in performing this process correctly.

-Ron</TD></TR></TABLE>

Like Ron said, there are many complicated steps involved in welding to do a stroker setup. I've had time do an offset ground, which was then followed up with welding to ensure that OE bearings would be used. Don't ask why, the shop I went through ordered it that way. Castillo's did it.
Castillo's does phenominal work. Period

 

Castillos crank's
I wish these two guys on H-T would see this thread(civdx94 and ZacCarter).......
I have a b-series crank thats been stroked to 96mm by Castillos. They were saying negative remarks about my crank I told them to call Castillos and find out it is possible to stroke a crank but I guess they did'nt b-cuz ZacCarter said he was going to call... but he did'nt so he decided to try to put me down

 

i cant wait to see how these motors react due to stroke r/s..im really looking forward to it ,

thank you for sharing the info and pics

 

SICKNESS! Very interesting combination!

 

NICE!

 

Is that safe? I mean look at the edges where the rods should be.... isnt that too thin to withstand all that forces??

Excelent work though!!

 

 

Hey smartass... I didnt ask "when this motor is gonna be build" or something.... What I asked is a general question AND IT HAS NOTHING TO DO with the date!!!! and even better there is a long time since that was posted so I can get an answer of what happened with the actual crank....

duh...

 

https://honda-tech.com/zerosearch

 

First things first, BIG THANK YOU TO RON from IPS (edo) for selling me his R&D destroker kit and for Jeremy from Inlinepro for doing the sleeves and assembly.


Jeremy from Inlinepro is about to finish the motor this week and I will picking it up soon

k24a block
89mm IPS pistons 12.1:1 compression
IPS rods
82.5 mm crank
Sleeves by Inlinepro












I have not decided 100% what I am going to do about the head but common sense tells me to just test the head that I will have pretty soon from RLZ Brad for my 101.6mm stroke motor with the IPS 8620 KXV cams.

I will keep you updated about this project as well.

I am trying to find a good looking aftermarket tach for motorcycles that will be able to register around 12000RPM+ for the 82.5 mm motor.

 

that looks good. 12k RPMs what kind of power do you think you are going to be making from 10-12k? More so what kind of Hp will this combo produce?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by f@sth@tch89 &raquo;</TD></TR><TR><TD CLASS="quote">that looks good. 12k RPMs what kind of power do you think you are going to be making from 10-12k? More so what kind of Hp will this combo produce? </TD></TR></TABLE>


On pump gas my guess 280-290

Marc P

 

How do you think the torque will be affected in comparison to if you were to use a regular k24 crank ?

 

What gearing? Please don't say stock in any form.

 

dam nikos, what other projects u got going on besides this and the other one?? lol

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Aquafina &raquo;</TD></TR><TR><TD CLASS="quote">What gearing? Please don't say stock in any form.</TD></TR></TABLE>

x2, its just as important as the build

 

We can sit here and assume all day long.. I am going to asssume that the powerband curve is going to shift to the right. How much and how? Not sure.. How it is going to compare to a 99mm crank motor? I am sure the tq curve is going to be night and day...

For the tranny I did a few spreadsheets using a 6.33 Final Drive and tsx/rsx type s gearing and it looked interesting but to be honest, at this point I am not worried about it. I will probably use the same head and tranny from my other 101.6mm motor as well as IPS KXV cams.

If I had to take a guess, I am going to say that it will make good power around 280-300whp with a very interesting hp/tq curve.

This is a R and D motor. Even if this attempt to test the 2:1 rod ratio turns out to be worth it... I am sure next time we would use the 1st generation s2000 crank instead of having to modify the stock RSX crank as he did in this case.

 

This reminds me of a 2L version of the spoon b16b. The thing that would be really interesting is if the head geometry can be altered enough to take advantage of the long piston dwell times. The manifold for this thing would be a nice science project in itself.

Props for trying something different.