When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Howdy,
I just started taking the stock manifolds off my 85 and was looking for a good way to mount the rear brackets for the a/c compressor and the alternator. It looks like I may be able to reuse the stock stuff but I wont know till I get that far. What did you do?
Thanks
Thanks guys. That's along the line i was thinking. From what ive read I'm gonna need a heated o2 sensor is there a specific part number or a universal?
Are the allen head header bolts a better idea than the hex ? I noticed thats what you used.
as far as the 02 sensor goes, you can weld it into the collector and then touch up with silver high temp spray, gerard did this recently with his coated hedmans.
I used stainless allen head, but you have to modify an allen key (shorten it) to make it work, and its tough with the hedmans, they seem to start bending around pretty quick so clearance is limited on some of them.
Last edited by blackozvet; Apr 8, 2015 at 07:53 AM.
You won't be able to use the bracket that connects to the 2 header bolts for the cylinder 1 exhaust runner of the header.
You have to use the rear bar type bracket. Keep the stud that was from the exhaust manifold. You need to make a spacer. You can use a pipe from a local hardware store and just cut it to fit. Don't get it too big, and for the best results don't get one with a split down the center.
You must have at least 2 supports for the alternator or it will break over time.
You won't be able to use the bracket that connects to the 2 header bolts for the cylinder 1 exhaust runner of the header.
You have to use the rear bar type bracket. Keep the stud that was from the exhaust manifold. You need to make a spacer. You can use a pipe from a local hardware store and just cut it to fit. Don't get it too big, and for the best results don't get one with a split down the center.
You must have at least 2 supports for the alternator or it will break over time.
I was wondering how to deal with the alternator. Im trying to picture what you're describing you wouldn't have a picture (or someone ) ?
I reread the post and I think I get it.
Here's a pic of a brace for the alternator. Not my engine but you can get a good idea of how it works.
If you don't have access to a welder, you can use 1/2" EMT conduit. After measuring the length you need, Just flatten the ends making sure the angles are right, and drill holes at each end.
I didn't use a heated O2 sensor on my '87 headers. I welded a bung in the driver's side collector and installed the existing sensor. The collector takes longer to get hot but it works. The existing wiring was long enough.
You will find that re-installing the OEM GM large starter will be a royal PITA. I would recommend getting a new Hitachi-style starter. I picked up a Summit clockable Mini-starter and it was a bolt-in. The car's wiring didn't need any modifications at all.
Here's a pic of a brace for the alternator. Not my engine but you can get a good idea of how it works.
If you don't have access to a welder, you can use 1/2" EMT conduit. After measuring the length you need, Just flatten the ends making sure the angles are right, and drill holes at each end.
I didn't use a heated O2 sensor on my '87 headers. I welded a bung in the driver's side collector and installed the existing sensor. The collector takes longer to get hot but it works. The existing wiring was long enough.
You will find that re-installing the OEM GM large starter will be a royal PITA. I would recommend getting a new Hitachi-style starter. I picked up a Summit clockable Mini-starter and it was a bolt-in. The car's wiring didn't need any modifications at all.
Do I need to remove the starter to fit the passenger header ? I haven't gotten that far. Iv e removed the stock shorties and managed to fit the drivers side header down from up top.
Do I need to remove the starter to fit the passenger header ? I haven't gotten that far. Iv e removed the stock shorties and managed to fit the drivers side header down from up top.
Yes, the OEM starter has to be removed to get the passenger side header into place. To get the OEM starter back in, do not bolt the header in place. It's best to have a helper hold onto the header so that it can be moved around as the starter and cables are re-installed.
What if anything did you guys use for heat shielding ? On the passenger side the transmission lines and starter wiring are quite close and on the drivers side the brake lines an close as well. I haven't got to the spark plugs yet to see if any of the wires will be a problem.
What if anything did you guys use for heat shielding ? On the passenger side the transmission lines and starter wiring are quite close and on the drivers side the brake lines an close as well. I haven't got to the spark plugs yet to see if any of the wires will be a problem.
not a good photo, but i wrapped the short straight sections that go past the starter, and the wiring is inside the heatproof tube (the orange stuff and the silver stuff)
not a good photo, but i wrapped the short straight sections that go past the starter, and the wiring is inside the heatproof tube (the orange stuff and the silver stuff)
Headman Header Install
