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I'm about to start porting my stock base and need to know which is bigger,What they cost,and also where to get a gasket set for large tube runners to match them up as well.
Thanks in advance.
the 1204 and 1205 are race gaskets. You could use the 1204 because it is the same size as a 1256 (stock) but if you are going to use that same intake gasket when you put the motor together, you should get a 1256. It has an open exhaust crossover and the 1204-1207 do not. I think you will need exhaust crossover on a tpi motor.
Summitt sells them for about 16 bucks.
[This message has been edited by jcb999 (edited September 28, 2000).]
1204 is NOT a race gasket, man. It is a Permatorque Blue gasket for IRON/OEM intake manifolds and should not be used w/aluminum intake manifolds. Same PORT dim's as 1256 but 1204 has metal blockers that you can use to block exhaust crossover...
1205-1207 are for bigger port heads are more like racing gaskets.
Thats what I need to know, my heads are in the shop getting ported and polished and he recommended that I do the lower myself after I showed him my plenum, but what gasket do I go by to port to, 1205 06 07 which one has any one used to port their lower?
You are correct about the 1204 not being a RACE gasket. But I think you are mistaken about the use of a 1204/1205 on aluminum intakes. The Airflow research instructions say a 1204 (in most cases it is a 1205) is the recommeded gasket for their aluminum heads and intake.
The port size is listed as the same for 1256 as a 1204.
However, as I indicated the crossover is plugged on a 1204.
According to the Jeggs online catalog:
375-1256 Stock with open exhaust crossover
Thick: .060''
Port Size: 1.23 x 1.99''
375-1204 Stock with blocked exhaust crossover
Thick: .060''
Port Size: 1.23 x 1.99'' $ 12.99
375-1205 Stock or small race port
Thick: .060''
Port Size: 1.28 x 2.09'' $ 13.99
375-1206 Medium race port
Thick: .060''
Port Size: 1.34 x 2.21'' $ 14.99
375-1207 Large race port
Thick: .060''
Port Size: 1.38 x 2.28''
PS.
You should not try to port a tpi base to anything larger than a 1204. You should consider a superram base if you want to go to a 1205.
[This message has been edited by jcb999 (edited September 28, 2000).]
iron heads w/AL intake = 1204 bad
Al heads w/al intake = 1204 ok in reality, but not according to FelPro.
FelPro does not recommend the 1204 for any combinations with AL becasue of the properties of the Permatoque gaskets. Call them and ask, or look in Summit Catalog table of FelPro intake gaskets...
[This message has been edited by FastBroker (edited September 28, 2000).]
Originally posted by FastBroker: Al heads w/al intake = 1204 ok in reality, but not according to FelPro.
FelPro does not recommend the 1204 for any combinations with AL becasue of the properties of the Permatoque gaskets. Call them and ask, or look in Summit Catalog table of FelPro intake gaskets...
If there was a specific problem with using Permatorque gaskets on aluminum heads or intake I think that would cause somewhat of a problem with most of the aftermarket high volume heads.
Considering the 1205-1206 are also permatorque gaskets and they are the required size for AFR195-AFR210 (aluminum heads) in addition to Brodix Track 1 heads (I should know because I own a pair).
I thought the little blue silicon around the intake and water ports was what they referred to as perma torque. I thought that, they were PT because since it is on everyone of the gaskets 1204-1206 and that is the only thing that I have ever noticed that was visibly different between the two (120* and 1256). I must have been mistaken.
Since they do not have this documented in their references in the summit or jeggs
catalog I guess we may never know for sure.
But what ever. I guess it seems pretty important to you. It really does not matter to me. I use the 1206 for my needs because it is the only one that will work.
But now that I look at your post from, posted September 28, 2000 07:53 AM
I get the impression that you are saying that a 1204 is a permatorque but the 1205-1206s are not. That's pretty strange because there is no reference to the 1205s-1206s being any different (other than port size) than the 1204s in any Felpro info that I have ever seen. But, I guess you know better.
[This message has been edited by jcb999 (edited September 29, 2000).]
Didn't call FelPro, did you? Call Jeg's or Summit... Man. 1204 is Peratorque and has different properties than the 1205+ which are Printoseal gaskets, not Permatorque. Maybe that's your confusion. I believe that they ALL have that little bead around the ports. Ever sen a 1204 next to a 1205??? They call them Pernatorque Blue for a reason. All blue whereas 1205+ are black except for the blue stuff around the ports.
FYI, if you do a GREAT job of installation, all the gaskets will work with any combination, it's just that the correct gasket(s) will ensure a better seal under abusive conditions and tolerate a little shoddy installation work AND will last longer. It just has to do with compressability of the gasket and with the expansion differences of the materials that are being mated.
I'm using the FelPro 1204 as specified by AFR. I'm using these gaskets with my aluminum AFR 190s and my aluminum TPIS MiniRam. I followed AFRs directions because they have been using these gaskets for decades.
Tim
------------------ TRAXION's 1990 IROC-Z
Best Time = 12.587 @ 107.97mph (1.710 60ftr) on the long runner setup. All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels. Stock Wheels. No Weight Reduction.
Gunning for NA 11's with the MiniRam II and Hooker LT Headers.
-=ICON Motorsports=- Moderator: PROM board at thirdgen.org
I'm in the process of installing the AFR 210's on a 406. Here's what the AFR instructions say:
"Fel-pro 1206 standard gaskets should be used for 210, 220 and 227 heads. Fel-pro 1205 gaskets should be used on the 195 heads. Raised runner 215 heads use Fel-pro 1263, this gasket is a trim to fit style. Fel-pro 1256 or 1204 should be used with 190 heads. Late model LT1 reverse cool applications use GM gaskets or Fel-pro 1284."
There is a difference between the permatorque and printo seal gaskets. The 1206 that I'm using is a printoseal (black with the blue bead). It's a big gasket that is used for the larger head port sizes and with single plane manifolds.
