Destroker kit, want to know all!

[Constant_Project21]

I just recently heard about a destroker motor for a dsm. I've been trying to find out some info about them, but can't seem to find a solid source of info. From what I understand, they're 4g64 blocks with 4g63 cranks and come out as a 2.1l motor. It's also my understanding that they rev around 10,000rpm, with an appropriately built head.

What I want to know are details, what piston/rod combos are used? Also if anyone on the site has had any experience with them. I like the idea of a real high revving motor, and just want to learn a bit more about them.

[v8klla]

They utilize a 4g64 block, 4g63 crank, 156mm rods (Manley used to make a 6 bolt version that was recently discontinued, we are looking at having our rods produced in this length), and 2.4l pistons. The rod ratio is great and you get a bump in displacement, its the best of both worlds :)

[Constant_Project21]

What components should be use in the head? I'm guessing it's gonna have to be built, do to the high revs.

[v8klla]

Yeah dual or beehive valve springs and lightweight everything would be a must for 10k plus...

[niterydr]

Great concept, but good luck shifting at those speeds.

[scheides]

Buschur is selling these now, pretty bad-ass setup IMHO. My question is are there any weird issues with install? It uses a different water pump than the 4G63, but what else? Standard timing belt? Etc.

The most attractive thing about these for evo owners is the price. THe 4G63 evo core is EXPENSIVE to replace if you blow a hole through the block. Getting 7-bolt 4G64 thats suitable is cheap...buschur is selling their 2.1's for like $4k even, no core required (standard core for evo block is like $1800, and $700 for the crank). That is a freaking sweet deal if you make some windows with your rods.

These are not new though, idk what's stopped people from using them more before now. AMS has used them in their drag car for a few years, and I know QPR was building one back in the day. Perhaps its the custom rod length? Stock is 150mm (I think) so they're a tish longer for this setup.

MAP, you should offer these in your evo lineup ;) I LOVE my stock motor, but should something happen to it...these look tempting for all the right reasons.

[scheides]

Great concept, but good luck shifting at those speeds.

There's a big snag. But if you're not concern about 9k+, these seem like a great drop-in replace a carnage-induced motor

[v8klla]

Buschur is selling these now, pretty bad-ass setup IMHO. My question is are there any weird issues with install? It uses a different water pump than the 4G63, but what else? Standard timing belt? Etc.

The most attractive thing about these for evo owners is the price. THe 4G63 evo core is EXPENSIVE to replace if you blow a hole through the block. Getting 7-bolt 4G64 thats suitable is cheap...buschur is selling their 2.1's for like $4k even, no core required (standard core for evo block is like $1800, and $700 for the crank). That is a freaking sweet deal if you make some windows with your rods.

These are not new though, idk what's stopped people from using them more before now. AMS has used them in their drag car for a few years, and I know QPR was building one back in the day. Perhaps its the custom rod length? Stock is 150mm (I think) so they're a tish longer for this setup.

MAP, you should offer these in your evo lineup ;) I LOVE my stock motor, but should something happen to it...these look tempting for all the right reasons.

We're building a few of them for stock actually, but 6 bolt applications :( 7 Bolt is actually easier as Manley does make the 156mm rod for them still. I guess I'm not familiar with the differences between water pumps and such though, but it makes sense since the block is out of an early 200X Eclipse I believe...

[Super Bleeder!!]

Good luck shifting or having a head that will breathe at 10k.

If you want to rev to 10k, get an S2000.

[96GST16g]

my buddy had a civic hatch wit a B18c5 motor tha went to 13k but had an issue with tryin to push 14k