Which of you members on here are running a 2.4L, 2.5L, or 2.6L 4g64 in your Evos? What are you setups? What kit did you get? Are you satisfied with it? I have read threads on here but not many results were posted after they started their build. And no feedback was given on Brian Crower kits or SBRs and so forth....

thanks! I'd love to hear from you all!

 

I'm building my 4G64 right now...using the Brian Crower 102mm stroke crank and long rod w/ JE Pistons. Should make very good torque.

I'll be posting the entire build when finished.

 

how much do the 4G64 blocks usually go for?

 

2.4 rocks if you do it right. RRE FTMFW!

 

SeanC, please keep me posted. I'd like to see your results to help me make a decision.

Cmon, where is everyone else at! LOL

 

Most people stick with using just the crank and going 2.3L which is much less painfull than adding the taller block. Most people don't want to deal with the associated rod clearance and mivec timing issues.

The big know it all performance shops tend to stick with the 2.0L/2.3L combos and that makes a very clear statement to me. I'm sure there are real reasons for those selections. Considering the options you have with compression and head work I'm not sure there is a strong reason to go to a 2.4 or above.

 

for displacement reasons

 

Well you can go with a tried and true 2.3 using your own more modern block..... or ..... you can pick up and additional .1 displacement and do it the hard way.

Call AMS and ask them why their race cars aren't using the 2.4.

 

i am running a 4g64, although it is in a 99 spyder. last dyno it made 491hp 473 tq. it was running a 35r with 770cc injectors, dual fuel pumps, completely stock 1g head, s-afc, maf-t, wiesco pistons with eagle rods at 9.0 cr. i love the 2.4L platform and would recommend to anyone to give it a try.

 

I had one and went back to a 2.0. Lots of torque i do admit that just not many revs.

Reason why people normally stay away from the 64 block is becouse you have to drill and tap for oil squirter's, make a water pump adapter, limited on head gasket options and the rod ratio really isnt the best. But if you take that same 64 block and put the 63 crankshaft in it with long rods you now have a 2.1 destroke that has a 88mm stroke and 87mm bore "almost perfectly square"

Chris

 

HKS head gasket works fine for stock bore size.

I've run the 64 for 1.5 years and it has held strong so far. 38-41 psi track visits now and again.

Right from the start I had an oil pump failure. Pump dug into the front cover a bit. I think I caught it in time. Checked the mains and rod bearings and they were ok but replaced them anyway, all has been well since.

Knock on wood!

Oh and I think it is a good option but I can't say I recommend Magnus. Took far too long to build the motor and terrifying customer service. But to their credit the motor has held up to the abuse. 30 psi at 4500 rpm in 4th on a 35r.

And what is wrong with the rod ratio? That is why people use the 64 block. Better rod to stroke ratio than a 4G63 with 100mm crank.

 

maybe AMS can respond to this question on here....AMS?


I also thought that the 4g64 platform had better rod ratio....? Drilling and tapping for oil squirters are no biggie. Whats hard about that? and how does a 2.1L make it "almost perfectly square"? please explain....Thanks everyone

 

The rod/stroke ratio does not change if you use a 64 block or a 63 block. The way to change rod/stroke ratio is with different length rods and different pistons. A 64 CAN acheive a longer rod due to the deck height if you use a stroker style piston in a tall deck block. Bore/stroke is a different story but you can bore a 63 block out to 87mm if you want. I did it and had a 63 blocked 2.1L. Great motor took tons of abuse just ate HG like noones business till the Titan MLS Felpro was used now it is a happy camper. BTW I hate Cometic 87mm HG's so get the Felpro Titan if you have 87mm bore.

Also as far as MAgnus goes, I have one of their 2.4L blocks in my Talon and it is unstoppable. It does destroy the entire drivetrain with ease but 6yrs and 600+whp and still less than 5% leak down, I'm sold. Good things come to those who wait. It isnt like Marco isnt in demand. I had same issues with Cometic gaskets on the 2.4 as well until I got a Felpro MLS. No more problems.

 

Yes I am running the stroker piston + longer rod setup which is why I said better rod to stroke ratio. I hear ya about drivetrain breakage. 3 front diffs and a cracked bell housing in the last year.

 

And btw AMS 2.3RR engine is a 64 block.