Headstuds..

Discuss topics related to the CA18DE and CA18DET series engines.
ca18detizzle
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Ok.. I KNOW this topic has been gone through. I did a search to make sure, and only came with 2 results for the CA. and both did not come to a conclusion of which arp headstuds to use.. I then went on ebay to check it out. Luckily there were 2 sets on sale.. Different pricing.. and if you look closely they are also different part #'s? .. Im confused.

http://cgi.ebay.com/ebaymotors...=WDVW

http://cgi.ebay.com/ebaymotors...=WDVW

Which set should I get? These seem to be CA specific but I dont know. Anyone know where I can scavenge some SR headstuds?

thanks


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biosehnsucht
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You need SR main studs, not head studs.

you'll need an extra washer for one of the studs, as it sits higher (the one above the waterpump).

need a edep socket, I think 12mm, or 1/2"? maybe don't recal can look tonight, and probably have to grind down the outside of the socket to make it then walled enough to fit in the head.

boost_boy
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biosehnsucht wrote:You need SR main studs, not head studs.

you'll need an extra washer for one of the studs, as it sits higher (the one above the waterpump).

need a edep socket, I think 12mm, or 1/2"? maybe don't recal can look tonight, and probably have to grind down the outside of the socket to make it then walled enough to fit in the head.
I stikll don't understand why you guys use an extra washer for one of the studs. With the studs I use on both my motors, I did not experience this problem. Now, using the ARP main studs on my bottom end gave me a problem with one stid being a bit long, so I dempled the oil pan. The only reason why it gave me a problem is because I used the AWD oil pan which is a tad bit different from the RWD oil pan.

Dee

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biosehnsucht
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one sticks up further. I think I actually ended up using the original washers not the ARP ones by accident and maybe ARP ones are thicker, but the one that sticks up didn't look like there was going to be enough thread left to torque all the way, looked like we'd run out of thread if we tried it, and I'd read of others having used a 2nd washer on that one spot so we did that.

81na ZX
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Its almost like you guys are talking about two different things without saying which one

So Dee's talking that the head studs from a SR20 work perfectly.Also, one of the SR20 main studs are too long.

biosehn seems to say the SR20 head studs won't work at all.Also, one is too long, or a main stud is too long.

me = confused

4g63's and L series' are so much simpler, and theres even a design change in the 4G63

boost_boy
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81na ZX wrote:Its almost like you guys are talking about two different things without saying which one

So Dee's talking that the head studs from a SR20 work perfectly.Also, one of the SR20 main studs are too long.

biosehn seems to say the SR20 head studs won't work at all.Also, one is too long, or a main stud is too long.

me = confused

4g63's and L series' are so much simpler, and theres even a design change in the 4G63
I guess what's missing is part #s. I wonder what part #s are you guuys using because I don't think mine are SR parts *I think*. My headstuds are okay and I did use brand new nissan washers instead of the ones provided by ARP. The ones I used on my crank all fit just fine, but the contour of the FWD/AWD oil pan caused one stud to touch the oil pan, slightly. Hopefully that cleared it up!

Dee

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biosehnsucht
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AFAIK SR20 *head* studs do not work on the CA, but I might be wrong.

SR20 *main studs* work as CA *head studs* only one is slightly 'too long' (the hole it goes into isn't as deep) and they are only just barely threaded far enough down the shaft to torque properly, and on the one that sticks up we used a 2nd washer to make up for that.

there are no ARP CA main or head studs, per se. You have to use other parts that work. Not sure what you can use for main studs on the CA..

there ARE ARP studs that would work properly but you'd have to get your hands on them as individual peices or as a kit for something else w/ too many peices as there isn't a kit for them for the CA.

ca18detizzle
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anyone know where i can get a set of SR headstuds??

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cuzan0
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ca18detizzle wrote:anyone know where i can get a set of SR headstuds??
ARP Part# of 202-5402 which is the part number for the SR20DET Main Stud Kit will work as CA18DET Head Studs,I know this cause i am using them in my running motor and there is no need to double up on washers....just be sure to use a thin 12 point 12mm socket or else the socket won't fit to tighten the stud nuts

ca18detizzle
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thanks alot man!!

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c-rad
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FYI, ANY bolt or stud can be gotten from ARP provided you know the width, length, pitch and thread type.


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