Thread: 92mm china crank??

Not doing our homework?

There are some of us on here that have spent the last 8 months, hours at a time dialing in these motors and doing our "homework". I have over 300 dyno pulls with 3 different 2.4's of different specs. If the setup was so "simple" the numbers we expected would have been reached months ago.

Ask Cory how he is doing right now going from 2.3 to 2.4. We all spend hours exchanging information back and forth and across countries getting the right combo down.

You guys are testing stuff we did years ago. I built a custom manifold using the xcessive plenum in 2009 and made 12whp over stock with SR16 pistons and a 4-1 header. The standard crank game is done, formula's that made power have been around since 2005. N1 cams? Long gone, big power 2L's have since moved on to another cam.

I did not want to go on a rant but to say we are not doing our homework is just a slap in the face. You guys put together a 92x92 motor and I want to see your face when you go on the dyno with your xcessive manifold and tri-y and make 250whp.

Going with a longer rod on the 92mm crank would almost be pointless unless we have a custom piston made or use a deck plate like derm.

We are already 3mm higher on the pin because of the crank and only have about another 3mm before we go into the bottom ring.

I am not talking to you specifically I know you dont post here much of your research discoveries but why not if you claim some Dyno #'s get some results back them up with some track time and show everyone your good results Like Cory does!! No you wont see a 92x92 motor making 250whp you will see a 90x86 one or you think its undo able ??

What I am saying is all of the theories of increased power as motor size increases is true while remaining on the stock crank.

Once you introduce the crank it is a totally different game. There are many changes that have to be made to keep this consistent.

You will have no problem making 250whp on a 90x86 this has been proven already. 285-295whp I believe can happen on a high comp 92x86

I did not mean to come off that way but once you mention "2.4 people" I take that to the heart as 1/2 of the 2.4's that are here in the states I test, drive and treat as my own.

I am not taking shots at all so don't take it that way.... bit payu I know u also have a bunch of stuff going on but how can u blame Jamie for not posting graphs... we would like to see some from you to man. I know I would. I lo e dyno graphs!!

I want to c this sick 2.0 doing 230


All I'm saying is how can u blame him u don't post many graphs either

^^ I will try to get the graph its not mine..

^I was just curious about it, but at this point I'm not that hardcore to build a 2.4 bc I have to many other things going on. A 2.3L making 250-260whp will do me just fine. Now if I was making high 6 figures a year, I would try to build a SR24 or SR27VE like derm. I just can't get over the fact that will don't have much intake manifold support. Headers have become easier to come by as of late.

And yes I totally agree a 92x86 will do 280-290. If I hadn't jumped ship and went bigger I don't think 280s would have been a problem on pump. I know my header and intake were holding it back...

I know a manifold that would work

Give me the date you are scheduling, I really need to stop slacking and get this out to you.

Some 2L intake manifold comparison. Same dyno session, minimal tuning.

This is the same manifold everyone said would not work because of design.

The support is there. We just need more people willing to buy/test.