BC Stroker Kit for KA24DE, 2.65L of Torquy Nissan Fun!

Dream about your 240's turbo power in this forum.
StarscreamS13
Learners Permit
Posts: 19
Joined: Sat Jun 03, 2006 5:32 pm
Location: Neenah, WI
Contact:

BC Stroker Kit for KA24DE, 2.65L of Torquy Nissan Fun!

Post by StarscreamS13 »

Brian Crower who has released some nice cams and stroker kits for a large amount of the sport compact engines.

I've been talking w/ him about a stroker kit for the KA24de's and here's what I've gotten from him:
"91mm bore x 102mm stroke = 2.65L
Kit would include BC billet crank, BC Pro Series rods, custom CP pistons, pins, rings and locks. Any desired bore up to 91mm, any desired compression."

The Pro Series rods r good for ~650+ hp and best guess to price would b around $3100 same price as most stroker kits for us 4-banging users.

If he had a market for it, it could come out and price might drop, just kinda getting others ideas on it.

Thanks,

Jay
'91 Charcoal Grey Hatch: 155whp/153wtq, Megan Street Spec Catback, Hotshot Header, etc, Megan Track Coilovers, J-Speed arms, ST rear sway, Nismo Power Brace, etc
Image
User avatar
TF_23
Driving Mom's Station Wagon
Posts: 43
Joined: Tue Aug 08, 2006 4:00 pm
Location: yigo, guam

nice!

Post by TF_23 »

if it comes out i'll get one when i get home from deployment.
mattmartindrift
Knows Some Stuff About 240's!
Posts: 249
Joined: Thu May 18, 2006 3:34 pm
Location: Baltimore, Md
Contact:

Post by mattmartindrift »

is it really worth it to increase the stroke an an already long stroke motor????


I'd love to do a KA20 with a big bore.
User avatar
jmhalder
Belongs To The TOP CONTRIBUTING MEMBERS!
Posts: 1542
Joined: Thu Oct 27, 2005 8:34 am

Post by jmhalder »

meh the 4G64 has a 100mm stroke... although we could no longer rev to 7k... maybe like 6300 or so... i would be interested to see the results...
13.36 @ 105.97, as of 10-27-07
-------------------------------
Holset HY-35, STI inj.'s bored to 650's, NVSRAM and Nemesys, N60, Walbro 255, 3" exhaust with FREE flowing mufflers and no cats, Zeitronix ZT-2, crappiest (Closest to stock) ACT clutch, Fidanza, Nismo mounts, JGS mani, JGS oil lines, ebay FMIC, ebay adapter with 3" K&N, and im the FIRST S14 KA to run a. U12 ecu

2 KA's down, 1+ to go.
KA24DE + 12psi = Turn ya out
User avatar
smracing
Dont Question My Nissan Knowledge
Posts: 740
Joined: Mon May 22, 2006 12:16 pm
Location: Carlsbad, NM

Post by smracing »

Most of us are looking to destroke the ka, and there is no way the motor would be safe at 91mm bore. 90 is pushing it. The piston speed would be thru the roof. If someone does this, I would consider reduced sized journals at least. The ka makes tons of usable torque at the current bore /stroke. Spend money on head work, and you'll make all the power you need.
User avatar
jmhalder
Belongs To The TOP CONTRIBUTING MEMBERS!
Posts: 1542
Joined: Thu Oct 27, 2005 8:34 am

Post by jmhalder »

well, obviously you can build an engine, buy a huge turbo, and have tons over power... all for the price to do this... but i would STILL be interested to see it (not that id ever do it myself)
13.36 @ 105.97, as of 10-27-07
-------------------------------
Holset HY-35, STI inj.'s bored to 650's, NVSRAM and Nemesys, N60, Walbro 255, 3" exhaust with FREE flowing mufflers and no cats, Zeitronix ZT-2, crappiest (Closest to stock) ACT clutch, Fidanza, Nismo mounts, JGS mani, JGS oil lines, ebay FMIC, ebay adapter with 3" K&N, and im the FIRST S14 KA to run a. U12 ecu

2 KA's down, 1+ to go.
KA24DE + 12psi = Turn ya out
Miami240
Dont Question My Nissan Knowledge
Posts: 891
Joined: Mon Feb 23, 2004 6:06 pm
Location: Miami, FL

Post by Miami240 »

Tell him to make a factory spec, fully counter weighed crank. I'd be all over it.
Image
12508 SW 117 Ct.
Miami, FL 33186
Ph: (305) 251-1995
KoukiKAT
Knows Some Stuff About 240's!
Posts: 287
Joined: Wed Feb 15, 2006 10:43 pm

Post by KoukiKAT »

Make it a destroked (say ~90mm), fully counterweighted crank for under $1500 and I'd buy one.
The 240SX is dead. Long live the 240SX!
Joel07
KA-T.org Sponsor
KA-T.org Sponsor
Posts: 1138
Joined: Thu Feb 03, 2005 8:44 am
Location: Durham, NC
Contact:

Post by Joel07 »

Miami240 wrote:Tell him to make a factory spec, fully counter weighed crank. I'd be all over it.
Agreed.

91mm just won't happen on a 240 motor. Well, let me rephrase that, it won't happen for long. First time it makes any power the block will basically rip itself apart. Thin cylinder walls don't do a good job of containing extremely high cylinder pressures.

I for the most part agree with the guys, either make a fully counterweighted stock-stroke crank, or maybe slightly destroked. Problem with destroking is that the tall deck would require you to run some extremely tall pistons, or longer rods, neither of which is good for high-rpm operation. Sigh, I feel like we're back where we were about a year ago with this discussion... LOL. :lol:
Image
Miami240
Dont Question My Nissan Knowledge
Posts: 891
Joined: Mon Feb 23, 2004 6:06 pm
Location: Miami, FL

Post by Miami240 »

Joel07 wrote:
Miami240 wrote:Tell him to make a factory spec, fully counter weighed crank. I'd be all over it.
Agreed.

91mm just won't happen on a 240 motor. Well, let me rephrase that, it won't happen for long. First time it makes any power the block will basically rip itself apart. Thin cylinder walls don't do a good job of containing extremely high cylinder pressures.

I for the most part agree with the guys, either make a fully counterweighted stock-stroke crank, or maybe slightly destroked. Problem with destroking is that the tall deck would require you to run some extremely tall pistons, or longer rods, neither of which is good for high-rpm operation. Sigh, I feel like we're back where we were about a year ago with this discussion... LOL. :lol:
Well, the longer rods would be great for eliminating piston sideloading, but i think it would be to an extreme already. As is, i think the KA rods are farking long! lol The stock bore and stroke is great as is. 2.4L of displacement, and the capability to rev to 8500 easily is there. The fully counter weighed crank just makes it all that much safer and smoother. So can i get a "hoorah!" for stock specs? :lol:
Image
12508 SW 117 Ct.
Miami, FL 33186
Ph: (305) 251-1995
Miami240
Dont Question My Nissan Knowledge
Posts: 891
Joined: Mon Feb 23, 2004 6:06 pm
Location: Miami, FL

Post by Miami240 »

Just an idea... maybe sell it with chamfered oil gallies already?
Image
12508 SW 117 Ct.
Miami, FL 33186
Ph: (305) 251-1995
User avatar
jmhalder
Belongs To The TOP CONTRIBUTING MEMBERS!
Posts: 1542
Joined: Thu Oct 27, 2005 8:34 am

Post by jmhalder »

So can i get a "hoorah!" for stock specs?
Hoorah!
13.36 @ 105.97, as of 10-27-07
-------------------------------
Holset HY-35, STI inj.'s bored to 650's, NVSRAM and Nemesys, N60, Walbro 255, 3" exhaust with FREE flowing mufflers and no cats, Zeitronix ZT-2, crappiest (Closest to stock) ACT clutch, Fidanza, Nismo mounts, JGS mani, JGS oil lines, ebay FMIC, ebay adapter with 3" K&N, and im the FIRST S14 KA to run a. U12 ecu

2 KA's down, 1+ to go.
KA24DE + 12psi = Turn ya out
Projex240
Dont Question My Nissan Knowledge
Posts: 867
Joined: Thu Apr 01, 2004 10:24 am

Post by Projex240 »

Its too bad that if he can build a crank to stroke it, why not keep the stock stroke, but come up with a stronger full counterwieghted crank that WOULD let us spin past 7600 safely.

The stock one can do it, but itd be nice to have a fully CW'd crank.
Much smoother.
-Josh
GlacierFreeze
Knows Some Stuff About 240's!
Posts: 231
Joined: Tue Aug 29, 2006 11:34 pm
Location: Hattiesburg, MS

Post by GlacierFreeze »

Is the stock one that good? I've heard a while back of people suggesting not going over 7200 or so.
Projex240
Dont Question My Nissan Knowledge
Posts: 867
Joined: Thu Apr 01, 2004 10:24 am

Post by Projex240 »

I rev to 7600, an ivan revs to 8 soo. i guess so.


-josh
User avatar
jmhalder
Belongs To The TOP CONTRIBUTING MEMBERS!
Posts: 1542
Joined: Thu Oct 27, 2005 8:34 am

Post by jmhalder »

I rev to 7600, an ivan revs to 8 soo. i guess so
and im sure neither of your heads are built... you know... since ivan has the quickest KA-T there is... lol...
I've heard a while back of people suggesting not going over 7200 or so
thats probably good advice unless your head is quite built up, and you have everything balanced... hell i wont go over 7k
13.36 @ 105.97, as of 10-27-07
-------------------------------
Holset HY-35, STI inj.'s bored to 650's, NVSRAM and Nemesys, N60, Walbro 255, 3" exhaust with FREE flowing mufflers and no cats, Zeitronix ZT-2, crappiest (Closest to stock) ACT clutch, Fidanza, Nismo mounts, JGS mani, JGS oil lines, ebay FMIC, ebay adapter with 3" K&N, and im the FIRST S14 KA to run a. U12 ecu

2 KA's down, 1+ to go.
KA24DE + 12psi = Turn ya out
User avatar
boosted91s13
240sx Wannabe
Posts: 145
Joined: Wed Aug 02, 2006 11:48 am
Location: Atlanta

Post by boosted91s13 »

another vote for fully cweighted crank! :twisted:
cheap_sticker05
Dreams of owning a 240!
Posts: 81
Joined: Wed Nov 16, 2005 7:21 am

Post by cheap_sticker05 »

+1 for fully counterweighted crank!
titec2
Dont Question My Nissan Knowledge
Posts: 618
Joined: Tue May 30, 2006 5:40 am
Location: Montgomery AL

Post by titec2 »

Does anyone know of any companies that can fully balance the KA crank? If so would you post up some links?
Miami240
Dont Question My Nissan Knowledge
Posts: 891
Joined: Mon Feb 23, 2004 6:06 pm
Location: Miami, FL

Post by Miami240 »

jmhalder wrote:
I rev to 7600, an ivan revs to 8 soo. i guess so
and im sure neither of your heads are built... you know... since ivan has the quickest KA-T there is... lol...
I've heard a while back of people suggesting not going over 7200 or so
thats probably good advice unless your head is quite built up, and you have everything balanced... hell i wont go over 7k
We're talking about buying a fully counter weighed crank... i doubt any of us are worried about stock motors.
Image
12508 SW 117 Ct.
Miami, FL 33186
Ph: (305) 251-1995
Projex240
Dont Question My Nissan Knowledge
Posts: 867
Joined: Thu Apr 01, 2004 10:24 am

Post by Projex240 »

I revved mine to 7200 all day long on a stock head and bottom end, but miami is right.
And yeah, my head is built. I was just talking about being able to rev to like 9k like some sr guys do with solid lifter conversions. Itsd be nice to have that kind of power and revs in a ka.

-Josh
Miami240
Dont Question My Nissan Knowledge
Posts: 891
Joined: Mon Feb 23, 2004 6:06 pm
Location: Miami, FL

Post by Miami240 »

I rev my bone-stock, 120k+ mile old motor to 7500 as is while making mid 400whp and running very very low 11's with 123-125mph traps and bouncing off the rev limiter while spinning and on the 2step every day. Ofcourse i don't expect it to last forever... but no motor lasts forever.
Image
12508 SW 117 Ct.
Miami, FL 33186
Ph: (305) 251-1995
Projex240
Dont Question My Nissan Knowledge
Posts: 867
Joined: Thu Apr 01, 2004 10:24 am

Post by Projex240 »

wow---nice.
I wish i could do that, but Id hate to break a trans right now;. But I am gonna go to the track when I get someone whos got a trailer to go with me just in case.
If I break it, then no biggie.
9sec240
Knows Some Stuff About 240's!
Posts: 375
Joined: Mon Sep 12, 2005 7:53 pm
Location: Chicagoland IL
Contact:

Post by 9sec240 »

Miami240 wrote:Tell him to make a factory spec, fully counter weighed crank. I'd be all over it.
I can get that done... I already have a quote on a fully counterweighted, pin bored, full oiling billet crank for the KA in stock stroke. Price would be 1500 bux each if I order 5... Its already designed in CAD and they are just waiting for me to say go ahead....
Ivan
Image
9sec240
Knows Some Stuff About 240's!
Posts: 375
Joined: Mon Sep 12, 2005 7:53 pm
Location: Chicagoland IL
Contact:

Post by 9sec240 »

Miami240 wrote:
Joel07 wrote:
Miami240 wrote:Tell him to make a factory spec, fully counter weighed crank. I'd be all over it.
Agreed.

91mm just won't happen on a 240 motor. Well, let me rephrase that, it won't happen for long. First time it makes any power the block will basically rip itself apart. Thin cylinder walls don't do a good job of containing extremely high cylinder pressures.

I for the most part agree with the guys, either make a fully counterweighted stock-stroke crank, or maybe slightly destroked. Problem with destroking is that the tall deck would require you to run some extremely tall pistons, or longer rods, neither of which is good for high-rpm operation. Sigh, I feel like we're back where we were about a year ago with this discussion... LOL. :lol:
Well, the longer rods would be great for eliminating piston sideloading, but i think it would be to an extreme already. As is, i think the KA rods are farking long! lol The stock bore and stroke is great as is. 2.4L of displacement, and the capability to rev to 8500 easily is there. The fully counter weighed crank just makes it all that much safer and smoother. So can i get a "hoorah!" for stock specs? :lol:
Stock stroke is where its at. The motor makes plenty of power with stock stroke and bore. I would also suggest keeping the bore to a minimum... 8500 rpms is pushing the piston speed limits... Reliability would be an issue at those speeds... The stress on the pistons, rods, and bearings would be HUGE. I have my rev limiter set at 8300 currently and have been over 8000 rpms probably a hundred times this season... I am about to pull the motor apart and see how everything looks.. I will keep you updated...
Ivan
Image
User avatar
jmhalder
Belongs To The TOP CONTRIBUTING MEMBERS!
Posts: 1542
Joined: Thu Oct 27, 2005 8:34 am

Post by jmhalder »

I can get that done... I already have a quote on a fully counterweighted, pin bored, full oiling billet crank for the KA in stock stroke. Price would be 1500 bux each if I order 5... Its already designed in CAD and they are just waiting for me to say go ahead....
damn, you never cease to amaze me... 9.22, and now this? cant wait to see what you have up your sleeve for next season!
13.36 @ 105.97, as of 10-27-07
-------------------------------
Holset HY-35, STI inj.'s bored to 650's, NVSRAM and Nemesys, N60, Walbro 255, 3" exhaust with FREE flowing mufflers and no cats, Zeitronix ZT-2, crappiest (Closest to stock) ACT clutch, Fidanza, Nismo mounts, JGS mani, JGS oil lines, ebay FMIC, ebay adapter with 3" K&N, and im the FIRST S14 KA to run a. U12 ecu

2 KA's down, 1+ to go.
KA24DE + 12psi = Turn ya out
User avatar
ghostchild316
Encyclopedia-Nissan
Posts: 1232
Joined: Tue Jul 13, 2004 4:49 pm
Location: Wichita,KS

Post by ghostchild316 »

holy *****..$1500 for a fully CW'ed KA crank?!I'm in :twisted:
I'm already dumping a ton of money on my new setup...
Dead account. Send pm's to "Alonso" from now on...
9sec240
Knows Some Stuff About 240's!
Posts: 375
Joined: Mon Sep 12, 2005 7:53 pm
Location: Chicagoland IL
Contact:

Post by 9sec240 »

ghostchild316 wrote:holy ****..$1500 for a fully CW'ed KA crank?!I'm in :twisted:
I'm already dumping a ton of money on my new setup...
If we can get three more confirmed people, its a go..
Ivan
Image
Miami240
Dont Question My Nissan Knowledge
Posts: 891
Joined: Mon Feb 23, 2004 6:06 pm
Location: Miami, FL

Post by Miami240 »

9sec240 wrote:
Miami240 wrote:
Joel07 wrote:
Miami240 wrote:Tell him to make a factory spec, fully counter weighed crank. I'd be all over it.
Agreed.

91mm just won't happen on a 240 motor. Well, let me rephrase that, it won't happen for long. First time it makes any power the block will basically rip itself apart. Thin cylinder walls don't do a good job of containing extremely high cylinder pressures.

I for the most part agree with the guys, either make a fully counterweighted stock-stroke crank, or maybe slightly destroked. Problem with destroking is that the tall deck would require you to run some extremely tall pistons, or longer rods, neither of which is good for high-rpm operation. Sigh, I feel like we're back where we were about a year ago with this discussion... LOL. :lol:
Well, the longer rods would be great for eliminating piston sideloading, but i think it would be to an extreme already. As is, i think the KA rods are farking long! lol The stock bore and stroke is great as is. 2.4L of displacement, and the capability to rev to 8500 easily is there. The fully counter weighed crank just makes it all that much safer and smoother. So can i get a "hoorah!" for stock specs? :lol:
Stock stroke is where its at. The motor makes plenty of power with stock stroke and bore. I would also suggest keeping the bore to a minimum... 8500 rpms is pushing the piston speed limits... Reliability would be an issue at those speeds... The stress on the pistons, rods, and bearings would be HUGE. I have my rev limiter set at 8300 currently and have been over 8000 rpms probably a hundred times this season... I am about to pull the motor apart and see how everything looks.. I will keep you updated...
Yea, i know it's a little high but what i meant was that it's doable without grenading instantly. I meant it more for those that are more serious with their setups and don't sit at that rev range for too long, too frequently.
Image
12508 SW 117 Ct.
Miami, FL 33186
Ph: (305) 251-1995
LocAss24
Knows Some Stuff About 240's!
Posts: 303
Joined: Mon Jan 31, 2005 10:19 pm

Post by LocAss24 »

Miami240 wrote:Tell him to make a factory spec, fully counter weighed crank. I'd be all over it.
Oh hell yes! That would be very nice.
Post Reply