Difference between mitsu 4g64 and Hyundai 4gcs?

[1ViciousGSX]

This isn't the link I was thinking of but this is an outstanding white paper:
http://www.kidzuku.com/StrokeOrNot.pdf
Damn Jakey, I'll need a couple of hours to read that. :wink:

Good write-up.

[carltalon]

This isn't the link I was thinking of but this is an outstanding white paper:
http://www.kidzuku.com/StrokeOrNot.pdf

I read that a few weeks ago. I dont think I'll ever run a 2.3 or 2.4 after reading that. I wish he'd have done some work with the 2.4 though. I wonder what differences the higher deck hight would have.

[Super Bleeder!!]

Jakey where did you find that? Is this some guys thesis or something?

nevermind - after i read into it i can clearly see it is not.

[Jakey]

Jakey where did you find that? Is this some guys thesis or something?

nevermind - after i read into it i can clearly see it is not.
I was browsing Toonerz one day and someone had posted a link to the white paper.

[Andrew7dg]

So going back to rod and ratio and differences of the 2.4L block (again just checking all of my options before I go building),

Using a stock rod will give me a 150mm/100mm= 1.5 which is the same as a 2.3 stroker engine. (the article was great info and I am still spending time on reading it but they probably didn't go over a 2.4L because the 2.3 to 2.4 is kind of close).

There is a longer rod out there that will give a 156mm/100mm which gives a 1.56 rod ratio

But a 162mm/100mm= 1.62 from 1ViciousGSX motor is pretty impressive compaired to the 1.7 in our cars right now. This is unless he is running a 2.1 destroked engine which is what I see most engine builders use these 162mm rods for

i can see how switching to a 156mm won't provide impressive gains but going to a 162mm seems pretty impressive. Is it worth going this route to get the extra rod ratio? I don't know if Vicious ever compared the rod ratio of cars to cars but I was just wondering why he went this route.

I am kind of interested in knowing what goatblower is running in his 2.4L motor also.
Who else is running a 2.4L block? What rods/piston setup are they using?

I have a spare 2.0L block for parts and the 4g64 block. I am hoping to get 2 engine stands and put them side by side to compare differences between the two. Should be kind of interesting. Just need one more spare engine stand

[1ViciousGSX]

I'm running a 2.4L engine. The 162mm rod is what Magnus was installing in their long rod 2.4L, which sounded good to me. I've got the Ross piston/Pauter rod combo. I take it to 8500rpm a lot of the time, no issues.

The main difference in the 2.0L vs. 2.4L are the lack of oil squirters (my 2.4L does not have them), knock sensor bung not there (although you can use another location on the side of the block), the two (2) small coolant holes are not drilled at the timing belt side of the deck (just drill them) and the 3mm taller deck the 2.4L block has. Other than that, minor differences exist.

Magnus just came out with a 2.2L engine that runs a 94mm crank, "best of both worlds" kind of set-up. With a 162mm rod I'm sure the rod ratio would look really good.

My opinion;
Street/strip car, go 2.3L/2.4L
Strip only car, go 2.0L/2.1L/2.2L

[JET]

This has been discussed a long time ago on other boards. On paper the 2.4 doesn't look nearly as good, but in real life the limits shown in the paper seem to be off. The 2.4 can rev higher than most people thought it would. I agree, if the car is going to be run on the street at all, run a 2.4. The spoolup difference is huge as is the torque off boost.

[Andrew7dg]

I just went to magnus website and saw that they are making their own cranks and high grade components.

Something to look at when I actually will build that race motor someday.

Thanks for the responses on this! I know this 2.4 block path has been done quite a bit but for me it is knew and I can't wait to see what this engine is capable of.

So one more question that I have is, what do people recommend for build up?

I have all I need to know about the short block but what does the 2.4L block pair with
Turbo?
Cams? (because of the bigger cams I will upgrade the valve springs and all)

[JET]

The turbo basically depends on how much HP you want to have and the spool you want. My SCM61 was a great street turbo. Basically it felt like a 50 trim on a 2.0, but with more power. Spool was very manageable. I am going to go just a little bigger with my next turbo. Cams, just go really big. Mine are pretty big and it idles fine, but lopey.