Honda / Acura K20a K24a Engine Forum banner
1 - 7 of 7 Posts

· Registered
Joined
·
140 Posts
Discussion Starter · #1 ·
Did a search and came up empty on specs. Anyone here know the specs on the rods that come with the crower stroker kit for K24? Trying to figure out what r/s you end up with using the kit and what size rod journals are used on the 102mm crank.
Are the pistons in the kit off the shelf, or pins raised?
This is probably covered in a thread here somewhere, but search function never seems to return the topics the way it should.
 

· Registered
Joined
·
140 Posts
Discussion Starter · #3 ·
R/S isn't great to start in a k24, trying to determine how much worse it gets, if at all, with the kit.

These kits have been around a while, so someone has to know. That same person will know if the pistons are shelf or not and whether the pins are raised.

As for your points about the most important thing being that the kit is the product of r&d, I might agree if I knew what the r&d produced via some specs, which is why I'm asking what you termed "good" questions.

Crower sells the 102mm crank through its dealers, and if the pins are not raised in the kit, I'd like to raise them, get some rods made to match.

Will my stroker kit be better than Crowers? Not sure, but it's my money and I get to do what I want with it. Plus, I would share on this great forum how it turns out.
 

· Registered
Joined
·
140 Posts
Discussion Starter · #5 ·
Thanks, I'm sure someone knows.

Clicking products on the IPS site shows nothing but cams.
Any specs on that IPS spec piston? Compression height? Is it even sold.

Also, you say the IPS spec is a 99mm stroke piston, was it designed for longer rods in a k24 build, or was that piston designed for a stroked k20?

Based on the diminutive skirt, doesn't look like something I'd want to get too radical with on rod angles.
 

· Registered
Joined
·
140 Posts
Discussion Starter · #7 ·
Still looking for info. Been researching the web and now I'm not even sure of the crank specs in the 2.4 stroker kit.

I see it is a 102mm stroke, but different sites have added 1.771 and 1.89 to the specs.
I know the journals take a .935 (b16 size) BE width rod, but does that mean the pin is 1.771?

Rod length in kit? Piston pin placement, compression height of kit's CP pistons?
What's custom, what's not? If I break a piston or rod is it a custom part or shelf?

Most of all, what what r/s do you end up with? If the rod is shortened, it sure doesn't sound like a motor you'd want to be running to 9,000, as the kit has been said to provide.
 

· Registered
Joined
·
140 Posts
Discussion Starter · #9 ·
Thanks for the info. If it has a 1.771 pin, it likely uses the crower b18 stroker rod. If that's the case, the piston likely uses a standard 1.181 comp height. Sounds like the shelf stroker rod may have driven the 102mm crank spec.

If that is the case, the kit produces a r/s of 1.52, just a bit worse than oem k24. Still, 9,500 rpm?

I'm not sure if I asked anyone here what is a safe rev limit for a built and balanced k24, they'd tell me 9,500. Hasn't 8,200-8,600 been about the ceiling in most cases?

Are we talking about that much difference between a crower balanced crank and a stock or balanced k24 crank?
 

· Registered
Joined
·
140 Posts
Discussion Starter · #11 ·
Gotcha. Then the rod is custom made for the kit - a .935 wide k24 rod?

Just seemed likely that the B18 stroker rod, being 3mm longer than a k24 rod, added up to the right match for a B spec crank with 3mm more stroke than a K24.

By chance do you have any tear-down data from an engine like this running those high rpms? Just curious about ovaling of cylinders, rod bearing wear...
 
1 - 7 of 7 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top