06SubLegTx Posted May 11, 2017 Share Posted May 11, 2017 (edited) I know this has been asked before. What's the better Head Gasket? Why? Edited May 11, 2017 by 06SubLegTx Link to comment Share on other sites More sharing options...
Svengouli7 Posted May 13, 2017 Share Posted May 13, 2017 All I know is I've replaced both. Link to comment Share on other sites More sharing options...
06SubLegTx Posted May 14, 2017 Author Share Posted May 14, 2017 All I know is I've replaced both. Can you tell which lasted longer? How many miles did you put on each different set? Link to comment Share on other sites More sharing options...
idosubaru Posted May 14, 2017 Share Posted May 14, 2017 what about the other important aspects of this job: 1. resurfacing the heads 2. resurfacing the block Open questions like this are usually limited in scope. The best qualified people don't usually respond. So you'll get anecdotal low grade replies. Ideally you get info from GD, GLoyale, Crawlerdan and people that have replaced significant numbers. Ivansimports as well. But they'd have to quit their jobs to reply to every common question so they don't respond much here. Ideally you do some significant searching and post links or specific questions. It would be nice to curate a thread comprising all of the high capacity folks comments on the subject. I've owned 40 Subarus, worked on many more and have no clue how many headgaskets I've replaced - and still my experience regarding your question is anecdotal and not technically worth a lick. By reading replies you'll just get a bunch of statistically meaningless opinions and experiences like mine. If you search, I know some of those guys have reported before what they use and have seen. It's worth finding what they've said. Use google search and find their usernames from USMB. I'm comfortable using Subaru or Fel Pro based on the comments of really experienced people who have come to their own conclusions. I'm pretty sure crawlerdan has used Fel Pro for years hundreds of times without issues over many years. He's got a statistically significant look at long term success and enormous same size a thread like this will never touch. 1 Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 15, 2017 Share Posted May 15, 2017 Subaru - 06+ 2.5 turbo gasket. Part number ending in 770. GD Link to comment Share on other sites More sharing options...
06SubLegTx Posted May 15, 2017 Author Share Posted May 15, 2017 Subaru - 06+ 2.5 turbo gasket. Part number ending in 770. GD Thoughts on Six Star? 1 Link to comment Share on other sites More sharing options...
DaveT Posted May 15, 2017 Share Posted May 15, 2017 Never heard of 6 star. For these engines. I would go by what GD wrote. I have not had to do one of these newer engines yet. I have done a few older ones, and used Fel pro, which is the only brand I have seen recommended other than oem. 1 Link to comment Share on other sites More sharing options...
ferret Posted May 15, 2017 Share Posted May 15, 2017 Not in the 10's or hundreds of these, but I have done at least a dozen or more of EJ25's, and I agree with Grossgary. I have used both Subaru gaskets and Felpro, and none have come back. Preparation is the key to a successful job. Each time I get the heads resurfaced, and scrub down the mating block surface with a 3M Scotchbrite pad, or 2 or 3 using kerosene as a solvent. I scrub until the block surface is completely clean of any old gasket or debris. Next is to follow the proper torque sequence and specs for the engine. I have yet to replace head bolts, but you will probably get various answers on this also. Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 17, 2017 Share Posted May 17, 2017 (edited) Six Star are just rebranded Cometic gaskets with a premium price. Nothing special about them. We occasionally use Cometics when we need a custom thickness (which is very seldom). No real complaints but honestly the 770 gaskets are as good or better than anything the aftermarket has to offer and they are cheap and readily available at any dealer. Pretty much always in stock. Made by Nippon Rienz. GD Edited May 17, 2017 by GeneralDisorder Link to comment Share on other sites More sharing options...
Mike104 Posted May 24, 2017 Share Posted May 24, 2017 I'm in the middle of a 2.5L to 2.0L swap and the 2.0L JDM engine uses a 482 (superseded by 483) head gasket. Main difference from the 770 gasket is the cooling cutouts on the 770 are smaller. I don't know the significance of that change so decided to use the 11044AA483 from the Subaru Dealer (get cost + 10% as son is employee). Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 25, 2017 Share Posted May 25, 2017 (edited) There is no significance to the cooling passage alignment. The factory uses gaskets that partially or completely block passages all the time. I have NEVER seen an issue due to gasket/head cooling passage mismatch. If it's for an EJ engine, has the right bore diameter, and the thickness you are looking for then you are OK to run it. GD Edited May 25, 2017 by GeneralDisorder Link to comment Share on other sites More sharing options...
Mike104 Posted May 27, 2017 Share Posted May 27, 2017 (edited) Thanks for the input GD, as I didn't know the significance of the cooling passage size, I stuck with what was in there. the 483 gasket is also an MLS one like the 770 Edited May 27, 2017 by Mike104 Link to comment Share on other sites More sharing options...
Crawlerdan Posted December 9, 2018 Share Posted December 9, 2018 On 5/14/2017 at 7:47 AM, idosubaru said: what about the other important aspects of this job: 1. resurfacing the heads 2. resurfacing the block Open questions like this are usually limited in scope. The best qualified people don't usually respond. So you'll get anecdotal low grade replies. Ideally you get info from GD, GLoyale, Crawlerdan and people that have replaced significant numbers. Ivansimports as well. But they'd have to quit their jobs to reply to every common question so they don't respond much here. Ideally you do some significant searching and post links or specific questions. It would be nice to curate a thread comprising all of the high capacity folks comments on the subject. I've owned 40 Subarus, worked on many more and have no clue how many headgaskets I've replaced - and still my experience regarding your question is anecdotal and not technically worth a lick. By reading replies you'll just get a bunch of statistically meaningless opinions and experiences like mine. If you search, I know some of those guys have reported before what they use and have seen. It's worth finding what they've said. Use google search and find their usernames from USMB. I'm comfortable using Subaru or Fel Pro based on the comments of really experienced people who have come to their own conclusions. I'm pretty sure crawlerdan has used Fel Pro for years hundreds of times without issues over many years. He's got a statistically significant look at long term success and enormous same size a thread like this will never touch. ive used literally hundreds of felpro mls. love them. only had two failures. one- im at fault. ill take the blame. second- anti lag, 25 psi, etc- that was not felpros fault. ive also had great success with cometic- but be cautious of the vendor you purchase from. six states Ive used here and there at customers requests. neither good nor bad opinions of the product Link to comment Share on other sites More sharing options...
iriejedi Posted February 14, 2019 Share Posted February 14, 2019 (edited) Any difference from the 770 & the 642? Never mind, just read some older posts and for N/A it's kind of the same.... Edited February 14, 2019 by iriejedi Link to comment Share on other sites More sharing options...
3Pin Posted February 14, 2019 Share Posted February 14, 2019 I've used fel pro on the last 15 and they have all gone well. Don't like the cam seals in the kit so I always get Subaru ones for that though. Link to comment Share on other sites More sharing options...
GeneralDisorder Posted February 14, 2019 Share Posted February 14, 2019 Fail-Pro has never been my choice. Besides I get 642's and 770's for like $29 so why bother? The OEM Subaru turbo gasket has never failed us. GD Link to comment Share on other sites More sharing options...
3Pin Posted February 14, 2019 Share Posted February 14, 2019 GD, LOL. Link to comment Share on other sites More sharing options...
iriejedi Posted February 14, 2019 Share Posted February 14, 2019 2 hours ago, GeneralDisorder said: Fail-Pro has never been my choice. Besides I get 642's and 770's for like $29 so why bother? The OEM Subaru turbo gasket has never failed us. GD LOL, GD I should buy them from you at that price! Best I've found is about $78 for the pair. Link to comment Share on other sites More sharing options...
GeneralDisorder Posted February 14, 2019 Share Posted February 14, 2019 Here's the really fun part. The supplier that sells them to me at that price is the supplier than owns the six-star brand. They have all that six-star stuff manufactured and re-branded for their private label wholesale line. Head gaskets, oil filters, etc. GD Link to comment Share on other sites More sharing options...
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