Ace 4-2-1 Header

[twag4]

Originally Posted by bfrank1972

Try driving a winter up north


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No thanks! But they are stainless, they have been through some biblical rain storms. I am a transplant from Oklahoma, don't miss winters at all..!

[FrX]

Originally Posted by twag4

Just wanted to show you how good these look after a month and a half of use. Very pretty still...

Did you drill out the header/overpipe connection for new hardware? It looks like yours uses nuts/bolts. Mine came with studs and nuts, like a turbo header.

[twag4]

Originally Posted by FrX

Did you drill out the header/overpipe connection for new hardware? It looks like yours uses nuts/bolts. Mine came with studs and nuts, like a turbo header.

No drilling. I didn't use the studs, those are just bolts. I put the nuts on the back with lock washers to help keep the bolts from backing out. It is an old technique from the old muscle car days. The bolts are threaded and tightened into the threads on the flange, then the nuts tightened on back to keep the bolts from backing out.

[FrX]

Originally Posted by twag4

No drilling. I didn't use the studs, those are justbolts. I put the nuts on the back with lock washers to help keep the bolts from backing out. It is an old technique from the old muscle car days. The bolts are threaded and tightened into the threads on the flange, then the nuts tightened on back to keep the bolts from backing out.

That's not a bad idea at all. Using bolts rather than the studs would probably give a bit more clearance when trying to get the overpipe in, too. I'll keep that in mind the next time it is apart.

[twag4]

Originally Posted by FrX

That's not a bad idea at all. Using bolts rather than the studs would probably give a bit more clearance when trying to get the overpipe in, too. I'll keep that in mind the next time it is apart.

And I used a higher grade bolt. O

[07jazzrs5gt86]

Originally Posted by twag4

And I used a higher grade bolt. O

What size bolt did you use? Also what grade is the bolts?
I was planning on doing the same
Thanks

[twag4]

Originally Posted by 07jazzrs5gt86

What size bolt did you use? Also what grade is the bolts?
I was planning on doing the same
Thanks

It is m6 x 30 mm, I forget thread pitch. (Maybe 1.25) and the grade is 10.9. When you see 8 or 8.8, that is the softest- compares to grade 3 in SAE hardware. Th 10.9 compared to grade 5, and 12.9 compares to grade 8. The numbers are from softest to hardest, or tensile strength. There are lower grades on smaller hardware, but for all of the bigger stuff, m6 and on I believe, these numbers are the same. Someone correct me if I am wrong. Just take one of the studs with you to get correct thread pitch. I bought these at lowes. They were out of stock on the m6 hardware I needed in stainless steel, otherwise I would have gotten stainless. The bolts started life shiny, but the heat has dulled them. I have all stainless hardware from there back that I bought at lowes. These are flange bolts due to the cramped space, makes it possible to get the 12mm box end wrench on them. If I get to lowes anytime soon, I will update with the thread pitch for sure.

[twag4]

Photos of a spare bolt like I used:

[twag4]

And another

[Wayno]

How many people are using OFT with this header so far?

Besides hawk.

[churchx]

Given strong discouragement for OFT voiced many times in favor of Ecutek in Ace's related threads, imho not too many. I'd also ask Shiv, if someone hadn't asked to do custom tune with this header state-side.

[Wayno]

Originally Posted by churchx

Given strong discouragement for OFT voiced many times in favor of Ecutek in Ace's related threads, imho not too many. I'd also ask Shiv, if someone hadn't asked to do custom tune with this header state-side.

Yes, I myself have said to people to get custom tune, not to switch platforms, least of all to the ridiculously priced ecu-tek.

That's not what I asked though. Anyone with actual OFT can pm me.

[AceHeader-MT]

Ace Header is halting production.

Our staff (now up to 7 members!) has been working flat-out to fulfill orders and now it's time to switch back to R&D.

If you have any open orders with us we will complete them and then go into hibernation for a while.

When we emerge we will have some new goodies that we think will help make these cars even more awesome.

We'll still be around so if anyone has questions just let us know.

Happy Driving,
Team ACE

[Calum]

Originally Posted by AceHeader-MT

Ace Header is halting production.

Our staff (now up to 7 members!) has been working flat-out to fulfill orders and now it's time to switch back to R&D.

If you have any open orders with us we will complete them and then go into hibernation for a while.

When we emerge we will have some new goodies that we think will help make these cars even more awesome.

We'll still be around so if anyone has questions just let us know.

Happy Driving,
Team ACE

I can't wait to see what else you guys come up with.