KA24DE ARP head studs: length and thread size/pitch?

Post by **SSS** » Tue Jul 05, 2005 3:14 am

Can someone with a set of ARP head studs for the KA24DE tell me the length and thread size/pitch? Since ARP don't make them for the SOHC, hopefully they'll be the same same length and thread size/pitch as the OEM E head bolts.

Post by **Import_Ant** » Tue Jul 05, 2005 3:13 pm

I've been waiting all day for someone to reply but since they haven't I'll wade in.

I believe the KA24E and 24DE main and head studs are interchangeable.

reasoning: If you can bolt a KA24DE head on a KA24E block why WOULDN'T they work? Since stroke is identicle in the engines and rods and cranks are interchangeable, the main bolts/studs should be interchangeable as well.

I was looking on Advance Auto Part's website to compare part numbers for the FelPro headbolts between the E and DE engines but I can't seem to get a listing. I'll do some more checking and post followup later this week.

Post by **WDRacing** » Tue Jul 05, 2005 5:28 pm

Call Autozone or Checker and cross reference the part numbers.

The post what you find.

Post by **SSS** » Wed Jul 06, 2005 6:55 pm

WDRacing wrote:Call Autozone or Checker and cross reference the part numbers.

Can't, i'm from australia. Our useless equivalents to those stores wouldn't have that info anyway.

Sent ARP an email requesting this info.

Post by **deviousKA** » Wed Jul 06, 2005 7:18 pm

Part numbers will be different, the oem headbolts are designed differently in a few ways.

As far as length is concerned, pretty sure the ka24de's are shorter but i dont have any in front of me to verify. If i have time and remember ill check tomorrow.

Post by **TheOne** » Wed Jul 06, 2005 7:18 pm

so you live in australia and you got a 240sx with a ka24e-de?(just wonderin, cause i do believe they get the sr20)

Post by **deviousKA** » Wed Jul 06, 2005 7:36 pm

TheOne™ wrote:so you live in australia and you got a 240sx with a ka24e-de?(just wonderin, cause i do believe they get the sr20)

bro, KA is world-wide.

Post by **SSS** » Wed Jul 06, 2005 10:47 pm

TheOne™ wrote:so you live in australia and you got a 240sx with a ka24e-de?(just wonderin, cause i do believe they get the sr20)

No i don't. I have a U12 Pintara (essentially same as your Stanza; with cosmetic differences) with the KA24E.I don't want to use the OEM headbolts for my turbo build (Garrett GT35/40R), hence getting ARP KA24DE studs would be advantageous.

As a side note, most people swap the KA24E out for the SR20DET in the JDM U12, which i think is stupidity.

Thanks gabe. If you could check for me, that would be excellent.

Post by **Import_Ant** » Thu Jul 07, 2005 9:02 am

I'm planning on going up to the dealership tomorrow I'll see if there are headbolts from the E/DE motors in stock I can compare. if not I'll get the tech to pull up specs on them.

In speaking w/ a friend of mine last night he believes the heads on the DE head bolts are wider but the shaft is the same width and lenght as the E bolts. I'll get the down-low though. if that's the only issue I would think the DE head studs would work fine, at worst you'd have to get different sized nuts but that'd be it. Anyhow I'll check on thread pitch, bolt diameter, and length as well.

This is a good topic and something I'm very interested to find out as well since I'm starting a boost-oriented rebuild too.

Post by **SSS** » Thu Jul 07, 2005 11:10 am

That would be great.

Even if the DE ARP nuts are slightly larger, it shouldn't be too much hassle to have the surface where the nut sits against the head machined out a little for the req'd clearance.

Post by **Jookmasta** » Thu Jul 07, 2005 8:04 pm

well advance doesnt carry them for sure i know. Dealership would be ur best bet but they told me that they would have to special order them (would take a week). Hopefully, APR will get back to u

Post by **RACE 66** » Fri Jul 08, 2005 2:20 am

OK,OK !!! I am going to give you guys a little teaser ! As I have to got to work in a few minutes.I have setting in my shop, a set of genie' ARP head and crank studs for a S.O.H.C KA motor! Months ago,(many) I recalled some fellow here did his homework and published the "no's" on the make up of studs. Fortunately, I hard copied the info. Right now, as Devious knows I am building a 2.5 motor for my dirt midget that will be going into it next year. Here's where it gets sticky. These studs are known as "off the shelf" items. Otherwise you have to know the "part no's" before you can play.So, I jumped at the chance and through two different resources, I was able to obtain a set of head studs.A warning though, they are very pricey, including crank studs they ran around $300.00 bucks ! Be patient and I will get back to you guys hopefully tonight, I have a big race in Canada tommorrow and doing the last of maintenance on the race car. Mike

Post by **WDRacing** » Fri Jul 08, 2005 2:38 am

If Ivan wasn't such a ***** lately, he'd be able to post the info. Hit him up on the PhatKat boards then post the info up here. Feel free to mention he's still my Bit<h

WD

Post by **:: orion ::** » Sat Jul 09, 2005 5:08 am

I just measured an extra KA24DE headbolt I had laying around, and the threads are 10X1.5...the bolt itself is 4.5" long total, threads cover 3.25".

Here's a pic:

Hope that helps.

- Brian

Post by **SSS** » Sat Jul 09, 2005 12:58 pm

It certainly does, thanks brian; i'll compare it against one of my SOHC headbolts today.

Post by **RACE 66** » Tue Jul 12, 2005 3:18 pm

Many apologies in not getting back to the forum in a timely matter:

Here's the "no's from ARP regarding KA24E cylinder head studs:

Part No: Description

AM5.275.1LB M10x5.275 1.25/1.5 Broach Stud

300-8343 M10x1/25 7/16 12pt nut

200-8519 M10 ID. .750 OD washer

You'll need 10 each. I did not quote pricing as I believe the price is "every where" on the spectrum.

As for my race last Sat. nite: we placed 3rd in the Main with 10 other cars competeing. This was the first time on "asphalt" as we primarliy run dirt.Yeah, were happy with the results.

Post by **deviousKA** » Tue Jul 12, 2005 3:36 pm

RACE 66 wrote:As for my race last Sat. nite: we placed 3rd in the Main with 10 other cars competeing. This was the first time on "asphalt" as we primarliy run dirt.Yeah, were happy with the results.

Awesome Mike!!, sounds like its off to a good start! I was stayin over near B-ham for a month or so, but i had so much goin on, would have been nice to get in touch.

Im still catching up on all my deeds over here in ID after that trip.

That was off topic, but hey.

Post by **Import_Ant** » Tue Jul 12, 2005 3:41 pm

RACE 66 wrote:Many apologies in not getting back to the forum in a timely matter:

Here's the "no's from ARP regarding KA24E cylinder head studs:

Part No: Description

AM5.275.1LB M10x5.275 1.25/1.5 Broach Stud

300-8343 M10x1/25 7/16 12pt nut

200-8519 M10 ID. .750 OD washer

You'll need 10 each. I did not quote pricing as I believe the price is "every where" on the spectrum.

As for my race last Sat. nite: we placed 3rd in the Main with 10 other cars competeing. This was the first time on "asphalt" as we primarliy run dirt.Yeah, were happy with the results.

you are awesome! thanks much.

Post by **Draag0** » Thu Feb 08, 2018 12:34 pm

ARP Head Studs 202-4304 for KA24DE fits Z24I engine.Just checked on 110Nm after 2100 km.Thank You for dimensions.

KA24DE ARP head studs: length and thread size/pitch?

KA24DE ARP head studs: length and thread size/pitch?

Re: KA24DE ARP head studs: length and thread size/pitch? (SSS)

Re: (WDRacing)

Re: (SSS)

Re: (TheOne™)

Re: (TheOne™)

Re: (SSS)

Re: (Import_Ant)

Re: KA24DE ARP head studs: length and thread size/pitch? (SSS)

Re: KA24DE ARP head studs: length and thread size/pitch? (RACE 66)

Re: KA24DE ARP head studs: length and thread size/pitch? (RACE 66)

Re: KA24DE ARP head studs: length and thread size/pitch? (RACE 66)

Re: KA24DE ARP head studs: length and thread size/pitch?

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