Only have half a tank left to get done by wednesday night. If it hasnt made it all the way out I am going to pump the rest and tune it on Ethanol then. I am seeing that this motor makes the same power per pound that the 2.2 did with less timing overall it seems. The displacement and cams seems to have offset the ultra long rod and compression of the 2.2.

So far I am very pleased, especially since this one was done with all off the shelf parts

aaron

 

JB, how high of rpms do you think you could take this 2.4? I know it is "low" boost but it seems to be doing great all the way to 8k. I was dead set on a 2.0 for altitude based on rpms but this combination seems to be great for spool and rpm.

 

Eric did the math and it looks like for the best blend of reliability and fun, it should probably be low 8's...8200 to 8300 probably tops.

 

The LR2.4 looks as if it may be the new motor of choice. I am set on the Cams for sure. Spool looks great. How do you think the cams compare to the std S2s? Doesn't look like you are losing any spool up Did you also get more degrees of MIVEC out of this than John's MIVEC cam gear?

Mikey

 

20psi by 4400 and 23 by 4550. I wish I was that lucky up here. I would hate for the turbo to keep going and the engine to say, nope sorry. Maybe I just need to move to your part of the country lol.

Plus you guys have MIVEC, I forgot about that one. Now I wish I would have bought that IX over my Saab lol

 

I am not 100% finished with the cams. I ran a standard S2 map with non modded MIVEC advance to get a feel for them. There is technically more advance that I can play with to get the spool a little better without adding timing (I hadnt even looked at the MIVEC yet till I posted the log).

If you cross the boost on the dyno plot to the log it made peak power, 584whp, at only 23.3 psi.

That is an improvement of 88whp over the 2.0L and about par with the 2.2. I can only find one log/dyno of the 2.2 that was close and it spiked 26.6psi tapering to mid 24 for 594whp.

 

Gotta buy that guy a fap-proof keyboard...

Can't wait to see the car in action this weekend, Aaron! Maybe I'll even be nice enough to send Mikey some phone-based videos.

Are you going to be heading down, Eric?

 

Don't make fun ahole! I like my phone based videos, remember I'm a squid. I have to get by day by day.

I hope you guys have fun. I won't be making it no where but on a plane Saturday headed towards the East Coast

Mikey

 

Who's making fun? Keyboards get expensive, especially them little phone keyboards!

Every gtyime mikey higtys the "gty" key, gtyhree legtygtyers gegty pressed agty gtyhe same gtyime!

 

i cant' believe i've only found this thread now.

 

I'm probably stuck in my garage for a few more weeks. Finishing up a few manifolds My garage is infested with an STy at the moment.

Aaron... Given the SAME maximum load applied for the same weight piston for these three combinations... this was the RPM at equivalent loads

Stroke - Load 1 - Load 2 - Load 3
100mm - 7892 RPM - 8285 RPM -8746 RPM
94mm - 8219 RPM - 8629 RPM - 9108 RPM
88mm - 8573 RPM - 9000 RPM - 9500 RPM

 

Well piston weight went down a little but rod weight went back up with the steel rod. I had mathed something similar earlier today after talking with Greg about the results with the new cam profiles. We decided that I can rev higher but I am going to wait a little before I start playing with that.

Its still only 440miles old, its just a baby

 

Aaron you can't be serious about taking this thing to load 3 That will be crazy! My motor will see max of 8.5k if i absolutely need it. Otherwise it stays between 8-8.2k

Mikey

 

No I will not be putting that level on it. I am sticking with 8200-8300 on the street. I will wait 9-10K miles before I get that level of silly.

 

Pumpgas timing (as previously posted), 30 psi tapering to 27, E85.

Timing was intentionally left low to explore the bounds of the turbo at low timing on good fuel.