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Drifting with CORR engines. Now with more power!!

30K views 128 replies 32 participants last post by  johnbrazee  
#1 ·
Hello Titan enthusiasts. My name is Ray Shake. I am from MA-Motorsports in Glen Arm, MD. We took over Chris Forsbergs drifting program for 2012 which included a crash course introduction to the VK56DE engine all being CORR spec and all needing refreshed. I decided to join this forum to share what we have learned and give some insight to what it takes to make close to 800 hp at the crank on Sunoco 110 standard leaded fuel (purple) and what we have planned to make even more. Also, the evolution of the engine through its various stages of development by Menards. All normally aspirated at this point, but we do have some turbocharger development planned.

It's going to take me a bit to get pictures together, but I should have a bit more time to do so. We initially kept pretty quiet with our work and only disclosed select images of what is inside of the engines. They are quite radical inside and of low production and all different from each other in fairly minor, yet frustrating ways.

I will start with what is stock on the engines. It truly shows what a good design Nissan provided as a base.

stock sleeves in block and stock bore size
stock head gaskets
stock head bolts
stock main bolts
stock main caps
standard head castings with many modifications (not racing specific castings)
stock front and rear main seals

That's about it. Pretty impressive I'd say even though the modification list is pretty damn extensive.

Here's a rough rundown of our current spec.

-14.2 compression pistons
-stock stroke billet crankshaft using Buick v6 indycar main bearings and honda rod bearings and slightly longer rods with pin moved up in piston
-.500" lift billet cams on intake and exhaust
-heads CNC ported in ports, cam clearance and combustion chamber
-37mm DLC lifter buckets from a JUDD v8 with corresponding cyl head processing
-titanium valves on int and ex with 5.5mm stems and lash achieved with lash caps between valve tip and bucket
- custom guides and seats
-valve stem seals from a pre combustion valve for an old honda engine (how many of you even know what that is??)
-custom sprockets for crank and cams using mechanical eccentrics to set chain tension for the custom double roller chain. (some indy irl, some chevy irl)
-custom steel chain guides and bracketry
-custom dual chain oiler using the oil pressure source for the factory lower chain tensioner
-custom billet structural oil pan
-dry sump pump from frank weiss
-custom adapter to fit tilton super starter in stock location ( required custom SBC 153t ring gear)
-adjustable crankcase vacuum adjustment on valve cover


That's a rough summary. It spins to 8200 rpm and sounds evil. Takes forever to assemble, prep and maintain. Feel free to ask any questions. We are planning to get a factory engine and see what we can do with it in a milder state of tune since we have no experience with the standard engines.
We also have some other neat VK based engines we are working on too.


I'll get pics up and going as soon as I can. Love these engines and cant share with anyone because nobody puts them in anything so nobody cares.
 
#2 ·
Looking forward to following this.
 
#3 ·
Came to the right place for people to care bro! I'm surprised there are so many parts that are stock on those things honestly. Pretty cool!
 
#6 ·
Awesome summary and images, looking forward to a LOT more ;)


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#8 · (Edited)
Those headers are sooooooo long! Wow I bet that thing sounds amazing! Finally some light on the 5.6 with the rips drag motor the drift guys and the Offroad racing guys. Might have parts available some day?...


P.s. I can't wait to see milenkos post freaking over all of this it's going to be awesome!
 
#18 ·
#11 ·
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#12 ·
It is crazy to hear that motor spin that fast it has a exotic sound to it with a side of brute force lol. No pop or crackle just a nice smooth exotic with a super deep tone. Or I'm just going crazy but it sounds great!
 
#14 ·
It sounds so sick! That idle is sweet. I wish the vk motor could have a big lope with a big enough cam.

If you haven't met Milenko yet or seen his posts you are going to have a six page post to read through when he finds this.
 
#15 ·
I figured I'd find some people on here who were curious where all the CORR stuff went. Keeping the sound of this beast alive for as long as I can. I got some cool flat crank VK motors too that I can't wait to hear run. Also working on some hybrid VK stuff mixing up 45's and 56's to achieve different goals. Love these motors. Just wish they weren't so huge dimensionally so we could put them in more cars.
 
#16 ·
Some of the guys here will deff want to see the combination of parts for the two motors. They already made a ls7 90mm tb work and now working on a porsche intake manifold to fit.
 
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#20 ·
We need ITB's that would work on the OEM ECU! Now that would be awesome.


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#22 ·
Thanks for sharing the info brotha!!! We need anything we can get here....The lack of aftermarket for us SUCKS!!!! We are working on a mainfold right now the lower buget type, but we should still see decent gains....And yes we are lookin at more top end after a cetain RPM the stock manifold falls on its face. The stock runners are way to long IMO, The mani we are working on has about 4 inch shorter runners and double the plenum area, with the inside of the manifold being MUCH smoother..Not to mention the ability to benefit from runnin larger cams...Its a work in progress
 
#23 ·
oh snap, i found this thread lol. I won't go into a long winded post this time lol. The biggest thing that caught my attention is that you ( Ray shake) mentioned using flat plane crank'd VK56? That is awesome, i really want to see and hear that! Also, the hybrid VK 45/56 parts.

Thanks for sharing all the info so far, we def need it for sure!

And finally some down and dirty details on a Corr VK56 engine! Thanks again bro! The more info the better!
 
#24 ·
Also, rayshake, i was just wondering if you guys utilize the CVTCS system on any of those VK engines you run?


I may have read over it, but with running those .500in lift cams did you have to clearance the head and/or valve covers any?


Those headers are amazing by the way! 2in primaries wow, nice! The titan community is currently stuck with 1-5/8in primaries aftermarket headers.

Anyway, this is too much to take in right now lol, thanks for sharing brotha. Can't wait to see more pics and details!
 
#26 ·
Also, rayshake, i was just wondering if you guys utilize the CVTCS system on any of those VK engines you run?

Those headers are amazing by the way! 2in primaries wow, nice! The titan community is currently stuck with 1-5/8in primaries aftermarket headers.

Anyway, this is too much to take in right now lol, thanks for sharing brotha. Can't wait to see more pics and details!
You realize that both the Pacesetter and PRT Nismore headers are 1 3/4" primaries right??
 
#25 · (Edited)
Clearance for cams and the larger lifter buckets is done. Dont think there are mods to the inside of the valve cover to clear cams. Cams are fixed to gear. Very small window before valve to valve interference.

The hybrid parts would be mainly crank and head swapping of parts. Destroked big bore type stuff for more reasonable piston speeds at even higher revs.

The flat crank motors we have are destroked 4.35l vk45 based engines. they are super radical and use all custom alum and mag casing.
Image

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Image
 
#27 ·
Our headers are pretty out there as far as what typical designers would think would work best and would not work well on a standard truck. These motors like to breathe. Our exhaust ports are 1 3/4" oval and there is no step from port to header. You can barely feel it with your fingernail. Flanges were custom designed and are individual.

Specs are...

4-2-1

1 3/4", 8" long off head

step to 2"

2", 22" long

2 into 1 collector

2 1/8", 4" long

transition to 2.5", (5" long transition)

2.5", 6" long

2 into 1 collector

step to 3.5" after collector.


Paired runners 2&6 and 4&8 and 7&5 and 1&3
 
#28 ·
****ing around at the shop, I tried a few things. BOSS 302 manifold, not even close. Stagger is opposite, width too wide and length too short. VK45 looks like it will work with adapters. Width is good. Which means, you could call Kinsler and get some infiniti pro throttle bodies and bolt on with some adapters.

Might buy a Titan so I can see what a stock engine looks like and what Other ECU we can integrate into the chassis.
Image

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VK45 daytona prototype manifold
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infiniti pro manifold
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vk45 standard manifold (not sure if it clears the vk56 crossover)
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#29 ·
Welcome to TT!!! :hi:

Subscribing!
 
#30 ·
I don't know about anyone else but i want one of those sticking through my hood!!! :coolsmile

GODZILLA!!!!
 
#31 ·
P.s. I can't wait to see milenkos post freaking over all of this it's going to be awesome!
LMAO Where in the world is MilenkoGT??? :)

Ray, this is some GREAT info!!!! Glad to have you on board!

We have a couple guys working on an IM at the moment! We've had to resort to doing things ourselves since the VK doesn't have the aftermarket support that we need.

We have a quite a few really talented people here & they've been able to go above & beyond what we thought was possible & with good results!

I'm looking forward to seeing more!!!