my clifford and hooker header combo just doesnt seal up good at all. im going to try again tomorrow and want this to be the last time i do this because its a real backbreaker. Anyone have any suggestions at all that i could try. any tips tricks, that helped you. I dont want to weld the intake to the head. My plan was to put the new mr gasket on i bought and get high heat silicon and put it on the manifold and mash it all together, and then rtv the outside edges of the clifford to seal it up completely. good idea, bad idea. I'll try anything at this point. thanks guys
Spray the gasket surfaces with either copper gasket sealent or a good gold spray paint.
I have never found MR Gasket gaskets all that great. Try Fel-Pro or Victor-Reinz.
Also. Mic the flanges on both the intake and header. If the dimensions are off by more then twenty thousandths you may never get a good seal. Mic about 20 different places on both the intake and header.
My guess is the flange thickness is different.
I have hooker comp header on right now and they are junk and a pain in the ass to do the plugs and wires, get headmen headers, much better flange and they clear the plugs and wires, 180 at bronco grave yard
Goddammit petroskie how many times do I gotta tell you STAY OUT OF THE INLINE SIX FORUM!!! jk man its all good Naw were talkin 300 I6 headers on here I heard Hedman Headers for the 300 are junk too. Wasn't there a thread about those headers also? It's much easier for anybody to make a decent set of headers for a V8 than it is for an I6.
Goddammit petroskie how many times do I gotta tell you STAY OUT OF THE INLINE SIX FORUM!!! jk man its all good Naw were talkin 300 I6 headers on here I heard Hedman Headers for the 300 are junk too. Wasn't there a thread about those headers also? It's much easier for anybody to make a decent set of headers for a V8 than it is for an I6.
I started a thread regarding the Hedman headers. I have a '75 F-250 2wd, and had several problems with tubes hitting the frame, and actually had to heat one tube with a torch and move it. Not only that, but the starter is locked in place by the headers.
Other guys have never had a problem with them. Go figure.
__________________ ’75 Ford 300 I6:Block: .030 over, balanced, P&P head, sbc valves, hyper pistons, moly rings, . ARP rod bolts,.020 off deck and head. Isky 256 cam and kit, Offy DP intake, Edelbrock 500 4v carb, recurved DS 11 dizzy, MSD street blaster TFI coil, MSD 6a ignition box, Hedman 6 into 2 header, Trans: Super tricked out C6.
cut some fender washers in half, and slide them under the washer at the intake side to even out the washer hold down pressure. use the stock type felpro gasket. don't use rtv. tighten bolts from the center out, bounceing from the front to the backcheck for loosness every100 miles, for a while, they will loosen up.
__________________ Charlie Join the Maryland Chapter click HERE
I have an Offy intake with the Hedman headers. I can see an angle on the factory washers, the intake flange being thicker than the header flange. I have invested $49.00 on a set of Stage 8 locking bolt kit, but have yet to put them on.
I wonder: most gasket sets come with an intake/exhaust gasket, and also a seperate gasket for the intake only. That is because some people put the old log exhaust manifold on without a gasket. While stripping a 300 at the bone yard, I noticed how the builder had used both gaskets, thereby doubling up gaskets for the intake. That might help you. If I were you I think I would find a way to even the pressure applied by the bolt/washer, whether that would be to install a shim on one side of the washer, or actually grinding down one side of a spare set from the junkyard to see if it works.
Summary: Find a way to even the pressure, then find a lock system that prevents the bolts from backing out, whether that is Stage 8 locks, or safety wire, or another header locking bolt system.
__________________ ’75 Ford 300 I6:Block: .030 over, balanced, P&P head, sbc valves, hyper pistons, moly rings, . ARP rod bolts,.020 off deck and head. Isky 256 cam and kit, Offy DP intake, Edelbrock 500 4v carb, recurved DS 11 dizzy, MSD street blaster TFI coil, MSD 6a ignition box, Hedman 6 into 2 header, Trans: Super tricked out C6.
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4th time trying to fix intake leak. HELP
jk man its all good
Naw were talkin 300 I6 headers on here I heard Hedman Headers for the 300 are junk too. Wasn't there a thread about those headers also? It's much easier for anybody to make a decent set of headers for a V8 than it is for an I6.
’75 Ford 300 I6: Block: .030 over, balanced, P&P head, sbc valves, hyper pistons, moly rings, . ARP rod bolts,.020 off deck and head. Isky 256 cam and kit, Offy DP intake, Edelbrock 500 4v carb, recurved DS 11 dizzy, MSD street blaster TFI coil, MSD 6a ignition box, Hedman 6 into 2 header, 
