KA24 unorthodox pulley set

[palmdale_mob]

Dumb question, but can you still run your stock clutch fan set up with a pulley set like this?

[DreamN]

Originally Posted by Matej

It was 250$ for the accessory pulleys, not including the crank pulley, if I recall correctly.

http://zilvia.net/f/group-buys/18854...ulleys-ka.html

shit your right. my bad. was still a good deal though. planned on getting an ATI crank one.

[Matej]

Is there any difference between S13 and S14 KA accessory pulleys?

I have been wanting to buy the OBX set, but I always see it listed only for S14's.

However, I do not see what about them could be different.

[projectRDM]

Originally Posted by Matej

Is there any difference between S13 and S14 KA accessory pulleys?

I have been wanting to buy the OBX set, but I always see it listed only for S14's.

However, I do not see what about them could be different.

Did you read the first page? For all those who missed it:

Unorthodox Racing developed the KA24DE accessory pulley kit on behalf of Scott Buwalda (buwaldahybrids.com) who at the time was trying to bring more market interest in the KA. This was like 1999 or so. Since Scott had an S14, they both put the kit together for the S14 chassis only, unaware of the fitment to the S13 chassis as well. UR quit production since they couldn't sell to a big enough audience and were priced too high.
OBX copied the design exactly besides the timing marks and had ridden off the development UR first laid out. But since they're not informed either, they only list it for S14s also.

Either kit fits all 91-98 DOHC KAs for the 240SX. It may also fit Frontier/Altima but I don't know.

Dumb question - Yes, the clutch fan fits. It's a replacement pulley, it's no different in design other than size and weight.

The UR pulley was redesigned in 1998 and fitted with a steel sleeve, the early models were all aluminum and wore on the crank seal, creating a leak. Anything you find on the market now that's a UR piece is the correct one with the sleeve.

ASP is a machined aluminum one also, very similar to the UR but cheaper. I don't know if they're still made either, we had a group buy on FA for them about 10 years ago too.

[Matej]

Good to know, thank you.

[rob_g]

Someone correct me if I'm wrong but I believe 2 of the 3 accessory pulleys fit the sohc also. The p/s doesn't because of the bend in the oil line. I can't say for sure though so.

[zenki.life]

ive heard that as well. but im not sure

[xs240]

well the thing is i have alot of solid race bushings everywhere, and the KA lets just say scares me 6-7k rpm... i always shift at 6k because of this reason anyways lol...

[arkive43]

also, there's another company NST (non stop tuning) that manufactures these same sets of pulleys you may wana check them out.

[EliteGTR]

i can bring these pulleys back if theres interest. just throwing it out there.

[Rag]

Originally Posted by EliteGTR

i can bring these pulleys back if theres interest. just throwing it out there.

Is this IFX Wen?

[ChicagoS14]

The only issue with either the OBX or UR set is that aside from the lack of timing marks on the crank pulley, you will notice that after hard driving you will go through rear main seals like nobodies business. Mainly because they don't have harmonic dampers.The Fluidampr and ATI crank pulleys are the only aftermarket pulleys that actually work without detrimental effects to the engine.

[Matej]

Originally Posted by ChicagoS14

The only issue with either the OBX or UR set is that aside from the lack of timing marks on the crank pulley, you will notice that after hard driving you will go through rear main seals like nobodies business. Mainly because they don't have harmonic dampers.

The authentic UR crank pulley does have timing marks, and the stock crank pulley is not a harmonic balancer either.

[I LUV MY S13]

can anyone send me a link to the obx set? i cant seem to find em..

[DreamN]

Originally Posted by I LUV MY S13

can anyone send me a link to the obx set? i cant seem to find em..

Let me google that for you

Then click shopping.

[zenki.life]

good thing i dont do hard driving cuz i have the entire set installed lol

[turbo2nr]

obx pully is garbage!

i bought one when i broke my stock pully,
first it had no timing marks.
second it did fit right on the crank collar it was to tight
third the front main seal was too loose on the pully causing the oil to leak out when the oil pressure increase.

it is garbage, i called obx and they are no help, they dont know their hands from their feet. i wish UR still made their pully id get one in a second, i rather pay extra for a quality part that works...

[projectRDM]

Originally Posted by turbo2nr

obx pully is garbage!

i bought one when i broke my stock pully,
first it had no timing marks.
second it did fit right on the crank collar it was to tight
third the front main seal was too loose on the pully causing the oil to leak out when the oil pressure increase.

it is garbage, i called obx and they are no help, they dont know their hands from their feet. i wish UR still made their pully id get one in a second, i rather pay extra for a quality part that works...

The OBX is an exact copy of the UR stuff, I've installed dozens of both of them over the last decade. The difference as I stated above is the UR was redesigned within the first year with a steel sleeve to reduce wear on the crank seal, the OBX is still the old design, all aluminum, and therefore wears more as it expands a bit when heated. And yes, there are no timing marks on the OBX, again we talked about this already.

As for not having a harmonic damper, the OE pulley doesn't have one either. We've talked about that since the dawn of the internet, the rubber piece in the OE pulley is designed to absorb shock when the A/C compressor engages. It *may* help with harmonics too, but that's not it's purpose, and I've seen plenty of cars with the UR pulley (my own for nearly 160k miles) that have no issues from it being installed.

[zenki.life]

ok good cuz all this pully talk gets me worried

[xpinoyxmk]

Dumbass uncle posted for me.

As for the pulleys, it sounds decent. Wouldnt mind getting a set. Going to rebuild my other ka soon, so i might pick up a set

[zenki.life]

Originally Posted by xpinoyxmk

me likey cars a lot...

what are you, retarded? post whore? both?

[EliteGTR]

either way just seen if there is interest. I have been working with unorthodox, the pulley has been redesigned making it lighter then before. we are looking about $120.00 shipped for the crank pulley. would need about 15 people interested.

[DreamN]

Damn $120 really? That's a great price. Any chance on trying to get another group buy going for the accessory pulley set?

[palmdale_mob]

I would be part of that group buy

[EliteGTR]

sets can be done. i think there a lot of confusion between the 91-96 accessory fitments. the accessories were developed using a 98 240sx. so 97-98 is not a problem. i think the problem is the 95-96 has a different offset on the waterpump and may require a spacer? not sure about 91-94.

[xpinoyxmk]

Originally Posted by EliteGTR

sets can be done. i think there a lot of confusion between the 91-96 accessory fitments. the accessories were developed using a 98 240sx. so 97-98 is not a problem. i think the problem is the 95-96 has a different offset on the waterpump and may require a spacer? not sure about 91-94.

If you do make a set and then give us some reviews on it, ill pick up a set as long as it fits my car and doesnt give me a major problems. Drive a 93 240sx.

[usajdm]

Any confirmation that any of the pulleys fit on SOHC?

[EliteGTR]

sohc crank is different

[projectRDM]

Originally Posted by EliteGTR

sets can be done. i think there a lot of confusion between the 91-96 accessory fitments. the accessories were developed using a 98 240sx. so 97-98 is not a problem. i think the problem is the 95-96 has a different offset on the waterpump and may require a spacer? not sure about 91-94.

Completely false. The accessory set was developed on Scott's car as I mentioned on page one, a 1995 model. He got the ball rolling nearly a decade ago.
There is absolutely no difference in fitment from 1991-1998 for the RWD KA. If they'll just break out the old castings they can use them again for all DOHC models, period.

[EliteGTR]

dont know. unorthodox cant back up 91-94 fitting. i had a friend with a 95 who had an issues with the waterpump offset. seems to troublesome. will try to get a GB for the crank together. accessories are just mostly for show anyways maybe good for 1-2 hp.

but unorthodox did have this info, they just dont know if they confirmed everything.

according to their drawings they have
alternator was for 95-98
P/S was for 91-98
W/P was for 89-96
they also had another drawing for the alternator pulley for 89 but no end year.

also nothing has been updated since 01 and lot of the people working back then are no longer with the company.