Its a 94mm stroke crank in a 2.0 or 2.4 block.

 

Interesting, I suppose its possible to attain the displacement with the rods/crank aka the stroke.

I still love the idea of the overbore on the 4b11...I seems like the 4g guys don't do that, I am guessing for a reason.

By the sounds of the car DB, you shouldn't care about the low end, its not like this kind of car is designed for DD'in, lol. You only spool once remember

 

The 4G is limited on the amount you can overbore it by the bore spacing on the block. I would bore as large as possible and may actually sleeve a block to get uniform cylinder wall thickness and see what I can do with it. I think a larger bore will help a lot by deshrouding the valves.

 

This is good news about the manifold. Does the LR 2.0L have more TQ than the standard 2.0L bro? I would think it does.

 

Really freaked out over this power band. I spent more time going over dyno charts today. No way in hell it's the LR2 liter causing the loss in low/mid range. It's impossible. The losses are too large and I compared the old standard 2 liter to the 2.1 I have been running, power is nearly identical the entire curve.

I have some work to do it appears, I'll find the issue.

 

hmmmm...i wonder what the answer is to this well i hope you find out soon cuz im sure its pissing you of like a mother! shoot i know i would be lol.

 

Can the flywheel/clutch be creating the problem since the Exedy is significantly heavier than the Tilton?? It's rotational mass at the worst spot...right off the motor.

 

No slorice, the Tilton was in when this began.

 

dave does the 2.1L motor make more TRQ then a standard 2.0? and does it spoolup sooner or the same??

cant wait to see what the issue is.

 

I'm an idiot sometimes evodan2004, some will say always but they are all slower so I ignore them! haha

The first freaking post in this thread has the dyno data I looked up again yesterday! haha

The first dyno sheet shows the car when it ran 9.0 which was a standard 2.0 and then the run from the 2.1 and last this LR2.0.

So I had this data already and forgot about it I guess. I say it is impossible for the loss to be the shortblock. I don't know what it is at this point but it's obvious I have to find it. Could it be the intake manifold? Maybe, I have not had this intake on a 2 liter in my car but I highly doubt it given the stroke/rod ratio is the same as the 2.1. Some thing has changed drastically. I need to check the cam timing and make sure something odd didn't happen there, looking at the sheets that makes the most sense.

 

did you change the valve timings with the LR ? the speed of the piston has changed if you changed the rod ratio, you should also reflect it in your timings.

 

The LR2.0 and the 2.1L have the same R/S ratio. The differences between the two is the compression height of the piston, the bore and the deck height of the block. The piston speeds and position compared to the valve timing is unchanged.

 

This coming week I hope to figure this out. I've got an idea and I'm looking forward to working through it to see what happens

 

Fuel is my guess. Import burned better on spool up over the E85? Talking outta my *** now I know lol

 

Not fuel.