FAST casualty
Former Vendor
Joined: Jun 2006
Posts: 1,622
Likes: 3
From: Dallas TX
Probably from personal experience since Billy also uses a large dose of meth in his setup 
This is a very likely guess. It does happen on occasion when you start making bigger power and you are using a larger than normal amount of methanol. At the "normal" usages it's not an issue.
This is a very likely guess. It does happen on occasion when you start making bigger power and you are using a larger than normal amount of methanol. At the "normal" usages it's not an issue.
Melting Slicks
Joined: Dec 2008
Posts: 2,296
Likes: 3
Probably from personal experience since Billy also uses a large dose of meth in his setup
This is a very likely guess. It does happen on occasion when you start making bigger power and you are using a larger than normal amount of methanol. At the "normal" usages it's not an issue.
This is a very likely guess. It does happen on occasion when you start making bigger power and you are using a larger than normal amount of methanol. At the "normal" usages it's not an issue.
http://www.flp-store.com/burst-panel-kit.html
$150 seems cheaper than replacing the whole intake manifold.
Actually, would you (or anyone who knows) be willing to explain what the burst panels actually do? "By installing a FAST LSX Burst Panel Kit you create a mechanical boost release system to avoid these costly problems.", so does that mean the pressure is released out of the intake manifold? How does it do that... I mean if its backfiring, then its combusting inside the manifold, so wouldn't that mean there is fuel? So if it releases the air and fuel out of the manifold, would that mean you would have fuel all over your engine? Honest question, sorry if it's stupid.
Former Vendor
Joined: Jun 2006
Posts: 1,622
Likes: 3
From: Dallas TX
I really wouldn't be worried about it at your power level. For Mr.Big, you bet. Basically if pressure in the manifold exceeds 36 psi, the burst disc will rupture and release the pressure. Saving the intake for damage. It still requires that you remove the intake manifold to replace the burst disc/s.
Melting Slicks
Joined: Dec 2008
Posts: 2,296
Likes: 3
I really wouldn't be worried about it at your power level. For Mr.Big, you bet. Basically if pressure in the manifold exceeds 36 psi, the burst disc will rupture and release the pressure. Saving the intake for damage. It still requires that you remove the intake manifold to replace the burst disc/s.
Time to find something else to have you install
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Melting Slicks
Joined: Dec 2008
Posts: 2,296
Likes: 3
Simple enough, but would that mean that the only time this could happen is when using meth? i.e. is the reason itself the meth, or did it just compound the backfire when it occurred because the meth was there and ignited? Is this why people say to use 51/49 water to meth mixed instead of 100% meth, something about its not flammable? As always, correct me if I'm wrong, just trying to learn.
Former Vendor
Joined: Jun 2006
Posts: 1,622
Likes: 3
From: Dallas TX
Simple enough, but would that mean that the only time this could happen is when using meth? i.e. is the reason itself the meth, or did it just compound the backfire when it occurred because the meth was there and ignited? Is this why people say to use 51/49 water to meth mixed instead of 100% meth, something about its not flammable? As always, correct me if I'm wrong, just trying to learn.
Probably just compounded the backfire more than likely. The idea behind the 50/50 mix is mainly from people who are concerned about a fire if the tank was ruptured.
Melting Slicks
Joined: Dec 2008
Posts: 2,296
Likes: 3
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
Melting Slicks
Joined: Nov 2005
Posts: 2,345
Likes: 2
From: Houston 06 C6 Ysi SC 402 fgd TX
guys I give you all my word, I haven't used the N2O in over 2.5 years, when we got to ~700rw on boost, I knew the extra shock from the 120rw the N2O provided, would probably be too much for the stock bottom end to handle... this was just from an off throttle boost run, and not uncommon, ask any of the "higher" hp guys that race... usually it doesn't blow the intake apart though most of the time it's mild enough to barely hear... this time I thought it blew my dash apart... scared the **** outta me...
now when we finally forge the bottom end, the N2O will be used when needed!!!
most of the time it's mild enough to barely hear... this time I thought it blew my dash apart... scared the **** outta me...now when we finally forge the bottom end, the N2O will be used when needed!!!
, I wouldn't expect your stock engine (im still amazed anyway as to how much it has taken) to handle the extra shock. you still coming houston way in a bit?
Le Mans Master
Joined: Oct 2007
Posts: 6,149
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From: Greater Detroit Metro MI, when I'm not travelling.
Pro
Joined: Apr 2007
Posts: 663
Likes: 0
From: Arvada CO
I really wouldn't be worried about it at your power level. For Mr.Big, you bet. Basically if pressure in the manifold exceeds 36 psi, the burst disc will rupture and release the pressure. Saving the intake for damage. It still requires that you remove the intake manifold to replace the burst disc/s.
Good info...
I am going to install a s/c at low boost soon. After looking at the pictures here, I wondered if using my 90mm ported FAST would be wise or not. Given all the info I read here, I think I will be OK to use my FAST with a s/c at low boost.