MLS Cometic Vs Felpro 1009 with Aluminum Heads

[lewtot184]

I don't think any of the mopar felpro gaskets have stainless fire rings; unless something has changed. I think some Chevy gaskets do have a stainless steel ring. The mopar gaskets I've used are just tin plated carbon steel. Stainless is a plus. The o-ring wire in some gaskets won't save your butt on burn thru. I use 8519 on both my engines without any issue, I'm not racing either car. The marine gasket may be more durable in a street/ strip combo. I used the 1039 in a 12.5:1 race 470 and it was bullet proof. The 1009 in the race engine torched the heads in just a few passes. Torching the heads is a pain in the ***; welding, machining, gaskets, seals, a lot of 4 letter words, etc.

 

[Road Grabber]

I will call them. The graphite listed in the catalog says it is a 4.10 bore. The composite says it is a 4.500 bore. Have you used a graphite gasket 4.500?

 

[Road Grabber]

I don't think any of the mopar felpro gaskets have stainless fire rings; unless something has changed. I think some Chevy gaskets do have a stainless steel ring. The mopar gaskets I've used are just tin plated carbon steel. Stainless is a plus. The o-ring wire in some gaskets won't save your butt on burn thru. I use 8519 on both my engines without any issue, I'm not racing either car. The marine gasket may be more durable in a street/ strip combo. I used the 1039 in a 12.5:1 race 470 and it was bullet proof. The 1009 in the race engine torched the heads in just a few passes. Torching the heads is a pain in the ***; welding, machining, gaskets, seals, a lot of 4 letter words, etc.

Thanks for the heads up!

 

[Road Grabber]

I don't think any of the mopar felpro gaskets have stainless fire rings; unless something has changed. I think some Chevy gaskets do have a stainless steel ring. The mopar gaskets I've used are just tin plated carbon steel. Stainless is a plus. The o-ring wire in some gaskets won't save your butt on burn thru. I use 8519 on both my engines without any issue, I'm not racing either car. The marine gasket may be more durable in a street/ strip combo. I used the 1039 in a 12.5:1 race 470 and it was bullet proof. The 1009 in the race engine torched the heads in just a few passes. Torching the heads is a pain in the ***; welding, machining, gaskets, seals, a lot of 4 letter words, etc.

Were the heads you used aluminum? Do any of those gaskets have stainless rings?

 

[lewtot184]

Were the heads you used aluminum? Do any of those gaskets have stainless rings?

Stage 6 heads. No stainless fire ring that I remember. It's been some years back and I doubt stainless was used then. It definitely left a lasting impression on me. Lot of repair work. A problem with stainless steel is that it doesn't conform easely . Your bore size and chamfer are big players.

 

[pnora]

Stage 6 heads. No stainless fire ring that I remember. It's been some years back and I doubt stainless was used then. It definitely left a lasting impression on me. Lot of repair work. A problem with stainless steel is that it doesn't conform easely . Your bore size and chamfer are big players.

I ran the stage 6 with a 300 nitrous hit. Ran them for a few years and zero issues with the 1009 gaskets. Of course I made sure they were not into the chamber. There was some discussions about detonation and the ones with close proximity to the bore might of contributed to the failures.

 

[Road Grabber]

If I understand this, a fire ring not hanging over but close to the edge of the bore/chamber can cause detonation because the ring glows hot?

 

[gtxrt]

I will call them. The graphite listed in the catalog says it is a 4.10 bore. The composite says it is a 4.500 bore. Have you used a graphite gasket 4.500?

it cant be 4.10 bore the stock 440 is 4.320 bore. I have the mahle in my 4.35 .030 over 440 now.

 

[gtxrt]

the victor and the Mahle are the same victor just calls them composite they are graphite composite. composite means combination. they get 10.00 more than the ones they make for mahle so they have to make them sound different.

 

[Road Grabber]

it cant be 4.10 bore the stock 440 is 4.320 bore. I have the mahle in my 4.35 .030 over 440 now.

The online catalog must be wrong. I’ll have to call them.
The catalog does list graphite gasket. It says 4.180 but there is no selection for engine size.