Manifold bolts
So I'm going to put a new head on and borla long tube on my 89 xj. What exhaust and intake manifold hardware do you all suggest so I can start ordering parts? Also the borla header is used can I use a oem gasket?
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ARP hardware (I would buy them for the head bolts also) and the best gasket you can buy. Buy the best the first time out, never worry about them again.
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What do I use for exhaust and manifold bolts tho arp dosnt make stuff
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Where did you look for them, I'm sure the 4.0 HP engine builders use them. If not check with Morris 4x4 for the answers on what they suggest.
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Most header bolts are 1".
Your bolts are 3/8-16 and you'll need at least 1 1/4" to 1 3/8" long, you have a 1/2" flange. Or..............it's not rocket science https://lh3.googleusercontent.com/Wl...=w1024-h768-no. |
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Make sure you use the special washers......
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Originally Posted by fannitti
(Post 3298128)
So I'm going to put a new head on and borla long tube on my 89 xj. What exhaust and intake manifold hardware do you all suggest so I can start ordering parts? Also the borla header is used can I use a oem gasket?
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I replaced all bolts/studs with ARP studs along with mil spec lock nuts. Don't have to worry about them backing off...ever.
https://cimg5.ibsrv.net/gimg/www.che...8b5b02c232.jpg |
Originally Posted by Boostwerks.com
(Post 3300175)
I replaced all bolts/studs with ARP studs along with mil spec lock nuts. Don't have to worry about them backing off...ever.
I'm looking at a later date to have a larger collector welded on my APN header for a custom exhaust, and I think im gonna follow your lead on the manifold hardware. |
the funky washers, are conical washers, as they heat up they allow for expansion and cover a larger surface area over the header/manifold flange which prevents loosing on the nuts as well as reducing the fatigue that lock washers cause which can break the studs/bolts off in the head over time.
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Originally Posted by Boostwerks.com
(Post 3300175)
I replaced all bolts/studs with ARP studs along with mil spec lock nuts. Don't have to worry about them backing off...ever.
https://cimg5.ibsrv.net/gimg/www.che...8b5b02c232.jpg For those who need ARP fasteners looks like here is the place to start. I use all ARP studs from top (valve covers) to bottom (splayed 4 bolt mains) on my race and HP street/strip motors have for many years. Cheap insurance and they make life easier when working with them. |
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