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Discussion Starter · #1 ·
Hey guys, just registered to the forum but I've been reading your stuff for years!

So I am in need of some info or ideas for head studs on my 2007 Arctic Cat 650h1. It has an 850cc big bore kit, so there'
20200722_202241.jpg
s TONS of power. My problem is the head is floating and stretching my cam chain. I guess this is a common problem with the big bore kits on this model, especially with this big of one it will happen more often. I figured the only way to fix this would to be to install head studs that torque well over the 40 ftlbs that the head bolts go to. I haven't been able to find any at all on the web so I would probably need to either make them or get some made. Anyone have this problem or studded their's? Also I need to know what to do about the one that needs to have a hole for the oil flow. Should the stud just have a hole in it or is there a better way? I need to find a way to stud it to atleast 50 ftlbs and with studs that will not stretch with the torque. Thanks guys!
 

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I put head studs on mine for two reasons, 1) the cost of one time use factory bolts, and, 2) I took my head off frequently!
KMS Motorsports – Phoenix AZ.





Item Name:

Arctic Cat Prowler 700 Cylinder Head Stud Kit

Item #:

KMS-ACProw700CylHd

Price/ea:

$124.95

Average Rating:




Product Image Gallery



These bolts offer:


Arctic Cat Prowler 650 (All Years)
 

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Discussion Starter · #3 ·
Oh ok. I read about someone doing this, but I didn't know it worked on my model. So will one of those studs have a hole for an oil passage to the head or should I make one?
 

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Discussion Starter · #4 ·
I put head studs on mine for two reasons, 1) the cost of one time use factory bolts, and, 2) I took my head off frequently!
KMS Motorsports – Phoenix AZ.





Item Name:

Arctic Cat Prowler 700 Cylinder Head Stud Kit

Item #:

KMS-ACProw700CylHd

Price/ea:

$124.95

Average Rating:


Product Image Gallery


These bolts offer:


Arctic Cat Prowler 650 (All Years)
My Arctic cat 650 h1 has the same engine as the 650 Prowler, right?
 

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Oh ok. I read about someone doing this, but I didn't know it worked on my model. So will one of those studs have a hole for an oil passage to the head or should I make one?
The oil passage surround the stud, that is one reason the AC head bolts have a reduced shank. You have two options, 1) is reduce the head stud shank to mirror a factory bolt, or 2) Enlarge the bolt hole than provides the oil. I've done it both ways, and I prefer reducing the shank on the stud, Any machine shop can do that, or do it like I did, I put the stud in my drill press, and used my angle grinder to remove the material, not pretty, but works..Good Luck!
 

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Hey guys, just registered to the forum but I've been reading your stuff for years!

So I am in need of some info or ideas for head studs on my 2007 Arctic Cat 650h1. It has an 850cc big bore kit, so there' View attachment 49963 s TONS of power. My problem is the head is floating and stretching my cam chain. I guess this is a common problem with the big bore kits on this model, especially with this big of one it will happen more often. I figured the only way to fix this would to be to install head studs that torque well over the 40 ftlbs that the head bolts go to. I haven't been able to find any at all on the web so I would probably need to either make them or get some made. Anyone have this problem or studded their's? Also I need to know what to do about the one that needs to have a hole for the oil flow. Should the stud just have a hole in it or is there a better way? I need to find a way to stud it to atleast 50 ftlbs and with studs that will not stretch with the torque. Thanks guys!
I have a 650 prowler and am interested in changing the head bolts for studs. I called ARP and they don't have a stud spacific to the 650. Do you have any information on what studs I will need. They said they couldn't tell me based on the bolt size alone. They sent me a file to measure the head, bolt hole and other points but I don't have the head off the engine yet. Any help would be greatly appreciated.
 

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Discussion Starter · #7 ·
I have a 650 prowler and am interested in changing the head bolts for studs. I called ARP and they don't have a stud spacific to the 650. Do you have any information on what studs I will need. They said they couldn't tell me based on the bolt size alone. They sent me a file to measure the head, bolt hole and other points but I don't have the head off the engine yet. Any help would be greatly appreciated.
The link to where I got mine doesn't exist anymore. You can probably get some at a machine shop or talk to someone who knows what they are talking about with head studs. They should be able to tell you the stud type based off the bolt size. Not sure why they said that
 

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The link to where I got mine doesn't exist anymore. You can probably get some at a machine shop or talk to someone who knows what they are talking about with head studs. They should be able to tell you the stud type based off the bolt size. Not sure why they said that
Something about having to measure the depth of the hole so the stud bottoms out. I'll research more. Thanks for the reply.
 
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