b20b header no fit
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b20b header no fit
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Re: b20b header no fit
Cheap header, just grind the bottom of the flange on the header to clear. With most cheap headers also the bolt holes are enlarged so make sure it's in the right spot and centered on the gasket.
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Re: b20b header no fit
they fit fine on my b18
my RMF v1 header was not cheap. and i would like to not grind on that header if i don't have to
my RMF v1 header was not cheap. and i would like to not grind on that header if i don't have to
Last edited by rickscrx; 02-06-2016 at 03:40 PM.
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#9
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Re: b20b header no fit
just modify the header. where you need to remove material from the flange won't effect it from sealing. Only an idiot would change the head gasket for that.
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Re: b20b header no fit
no way in hell am i going to change the head gasket.
i was just wondering if this is normal for this motor. maybe it's the p8r head thats a little different. i know it is a different casting.
i was just wondering if this is normal for this motor. maybe it's the p8r head thats a little different. i know it is a different casting.
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Re: b20b header no fit
Just grind the bottom of the flange of the header like we said, you don't need to take much, just 45 degree the bottom of the flange if it's thick enough. It's a simple fix and it won't affect anything.
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Re: b20b header no fit
I know what to do to make it fit.I would like to know if this is common for this motor
#14
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Re: b20b header no fit
The problem is not your engine, it is the flange on your header. The issue you are experiencing is common on all "B" series applications because they all have the same areas on them that can, because of casting shift during production, stick out below the bottom edge of the cylinder head. Chinese built headers, as well as uber-cheap Ebay headers typically have larger flanges than well designed headers, and thus, increase the possibility of interference when installed.
Modify the back edge of the header as suggested above for a quick fix. Sending it back to the supplier for a replacement one will almost certainly end with the same problem again.
Modify the back edge of the header as suggested above for a quick fix. Sending it back to the supplier for a replacement one will almost certainly end with the same problem again.
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Re: b20b header no fit
I also have that problem when I swap from b18 ls long block to the p8r b20 long block. At first I noticed that the header was not seating properly flush/flat on the head when I was tightening the nuts. So I removed all the nuts and see what was causing it to not seat flat and I noticed that the bottom of the header flange was causing it to tilt. So I tried pulling the header up while it's in the studs of the head and it finally seated nice flat. So check that first.
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Re: b20b header no fit
I also have that problem when I swap from b18 ls long block to the p8r b20 long block. At first I noticed that the header was not seating properly flush/flat on the head when I was tightening the nuts. So I removed all the nuts and see what was causing it to not seat flat and I noticed that the bottom of the header flange was causing it to tilt. So I tried pulling the header up while it's in the studs of the head and it finally seated nice flat. So check that first.
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