|
|
|
|
Thread Tools | Display Modes |
01-30-2013, 11:49 AM | #1 |
Scooby Newbie
Member#: 315446
Join Date: Apr 2012
Location: Trinidad
Vehicle:2004 Impreza 2.5L |
Turbo and SOHC Gaskets
|
01-30-2013, 01:51 PM | #2 |
Scooby Specialist
Member#: 151079
Join Date: Jun 2007
Chapter/Region:
MAIC
Location: College Park, MD
Vehicle:2005 2.5RS RBP too many friction losses |
I believe it's the 05-07 STI headgasket that will work. It's something like that. Someone else more knowledgeable can correct me.
|
01-30-2013, 03:15 PM | #3 |
Scooby Specialist
Member#: 271928
Join Date: Jan 2011
Chapter/Region:
Tri-State
Location: Gettysburg PA
Vehicle:2014 WRX Limited Crystal Black Silica |
I've seen people use sti gaskets as a replacement since they are thicker
|
01-30-2013, 06:13 PM | #4 |
Scooby Guru
Member#: 5218
Join Date: Mar 2001
Chapter/Region:
MWSOC
Location: SAUL'S Motorsports
Vehicle:96L Most Over- Developed Beater |
|
01-30-2013, 06:26 PM | #5 |
Scooby Specialist
Member#: 271928
Join Date: Jan 2011
Chapter/Region:
Tri-State
Location: Gettysburg PA
Vehicle:2014 WRX Limited Crystal Black Silica |
Hm.. I've always heard they were thicker and that's why people used them. I guess I misread, in that case it wouldn't it cause a failure sooner?
Last edited by alt14; 01-30-2013 at 06:33 PM. |
01-30-2013, 07:23 PM | #6 |
Scooby Guru
Member#: 71875
Join Date: Oct 2004
Location: Montana
|
No, you would use them because they are MLS (multi-layer steel) compared to the stock garbage graphite coated gasket. The difference is pretty small. Part number is 11044AA642
|
01-30-2013, 08:35 PM | #7 |
Scooby Specialist
Member#: 271928
Join Date: Jan 2011
Chapter/Region:
Tri-State
Location: Gettysburg PA
Vehicle:2014 WRX Limited Crystal Black Silica |
Ahh that's what it is haha thanks
|
02-01-2013, 02:52 AM | #8 |
Scooby Newbie
Member#: 280689
Join Date: Apr 2011
Chapter/Region:
SWIC
Location: Glendale, Az
Vehicle:0287 OBS/GL10 Dark blue and silver |
Does this carry over to newer n/a cars? Shoud I get a headgasket set for a 2010 STi for my 2010 2.5i?
|
02-01-2013, 04:46 AM | #9 |
Scooby Guru
Member#: 71875
Join Date: Oct 2004
Location: Montana
|
no. around 09 they started putting MLS gaskets in them. Also the cooling passages in the heads changed so the holes in the older 2.5 turbo gasket don't line up quite right. I think they use -770 which is the same as the 08+ sti.
And are the headgaskets on your 2010 leaking? |
02-01-2013, 06:59 AM | #10 |
Scooby Specialist
Member#: 51480
Join Date: Dec 2003
Chapter/Region:
International
Location: The Netherlands
Vehicle:1984 AM5, 1984 AF1, 1994 BC4, 2015 Outback |
All 2.5 gaskets you buy new from the dealer are MLS. Even for the 96-98 DOHC engines.
Up to 2006 all coolant passages for SOHC and DOHC 2.5L heads are the same, there are several gasket thicknesses available. After that the coolant pattern changed, therewith also the head gaskets. |
02-01-2013, 07:58 AM | #11 |
Scooby Newbie
Member#: 280689
Join Date: Apr 2011
Chapter/Region:
SWIC
Location: Glendale, Az
Vehicle:0287 OBS/GL10 Dark blue and silver |
Ok so would OEM be a good choice or should I go with something else? They are not leaking yet but I am at 71k and planning to do the timing belt kit in the next couple months and I have been seeing alot of these failing around 100K so since I'm going to be getting into the car anyways figure might as well make a weekend of it. Planning on a light weight crank pully and all new belts and hoses while I'm at it.
Last edited by Bababou; 02-01-2013 at 08:21 AM. |
02-01-2013, 08:09 AM | #12 |
Scooby Specialist
Member#: 271928
Join Date: Jan 2011
Chapter/Region:
Tri-State
Location: Gettysburg PA
Vehicle:2014 WRX Limited Crystal Black Silica |
I think what he was asking was your 2010 is leaking.. meaning after a certain year, yours included they started using the mls gaskets and the chance of them failing is lessened.
|
02-01-2013, 08:36 AM | #13 |
Scooby Newbie
Member#: 280689
Join Date: Apr 2011
Chapter/Region:
SWIC
Location: Glendale, Az
Vehicle:0287 OBS/GL10 Dark blue and silver |
I see so save the headache and extra cash and just watch it to see what happens and deal with it when it shows signs of a problem.
|
02-01-2013, 11:21 AM | #14 |
Scooby Specialist
Member#: 51480
Join Date: Dec 2003
Chapter/Region:
International
Location: The Netherlands
Vehicle:1984 AM5, 1984 AF1, 1994 BC4, 2015 Outback |
It's better to replace it as a precaution than to wait and see until it happens. Then you need to deck the block (that's where the problem has it's root cause).
|
02-01-2013, 12:19 PM | #15 |
Scooby Specialist
Member#: 244231
Join Date: Apr 2010
Chapter/Region:
NESIC
Location: Providence, RI, USA
Vehicle:2018 Crosstrek CVT DGM |
I will be getting my timing belt and valve cover gaskets (spark plugs seals are leaking) done later this year and may also get the clutch changed as well as the TOB is very noisiy. I am considering getting the head gaskets done at the same time to save on labor charges as well as to avoid having to have them replaced in the near future. At this time (97k mile) they are not leaking.
|
02-01-2013, 05:23 PM | #16 | ||
Scooby Guru
Member#: 71875
Join Date: Oct 2004
Location: Montana
|
Quote:
Quote:
|
||
02-02-2013, 02:20 PM | #17 |
Scooby Specialist
Member#: 73636
Join Date: Nov 2004
Chapter/Region:
E. Canada
Location: the 'wa, ontario, canada
Vehicle:2017 WRX base Urban Grey |
because I just asked my mechanic since I'm booked for wednesday to have this done, apparently all the gaskets according to him, are graphite, (for 2.5rs/i) the only mls ones are the STI gaskets, and these are factory parts from the dealer.
I told him I'd eat the extra cost of having heads machined so I can switch to the sti gasket. We'll see how that goes. |
02-03-2013, 12:51 AM | #18 |
Scooby Guru
Member#: 5218
Join Date: Mar 2001
Chapter/Region:
MWSOC
Location: SAUL'S Motorsports
Vehicle:96L Most Over- Developed Beater |
Call Cometic and get a set of their gaskets. You won't be sorry.
Jay |
02-04-2013, 01:30 PM | #19 | |
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region:
RMIC
Location: Teh Ghetto Garage, CO
Vehicle:99 2.5RS, '85 911 '73 914 and 2012 BRZ |
Quote:
|
|
02-04-2013, 02:30 PM | #20 |
Scooby Guru
Member#: 71875
Join Date: Oct 2004
Location: Montana
|
I don't think so. Someone I know just got a gasket kit for their 02RS and it came with the old gaskets, and the online parts dealers still list 11044AA633, which looks like this:
|
02-05-2013, 01:03 PM | #21 |
Scooby Guru
Member#: 141373
Join Date: Feb 2007
Chapter/Region:
E. Canada
Location: Quebec, QC
Vehicle:2022 Crosstrek Sport 6MT |
I'll side with Jamal on this one. As far as i know:
The EJ251 and the EJ253 use by default the 11044AA633. Single layered steel. EJ251 owners sometimes replaced their HG with the 11044AA642, MLS, used in the 04-05 EJ255 and 04-06 EJ257. Now, for some reason I read that EJ253s can use the 11044AA670, itself used in the 06-08 EJ255. Can't confirm that though. To add to the confusion, there is also the 11044AA770, used in the EJ257 2008+ - although it appears to look the same as the 670. |
02-05-2013, 01:09 PM | #22 |
Scooby Guru
Member#: 71875
Join Date: Oct 2004
Location: Montana
|
670 and 770 are the same thickness and construction, but the 670 is specifically for the 07 sti and then the 770 is on the 08+ and new n/a 2.5s. The difference is the cutouts for the cooling passages in the head. I think I have pictures of everything around somewhere.
Last edited by jamal; 02-05-2013 at 02:05 PM. |
02-06-2013, 12:20 AM | #23 |
Scooby Guru
Member#: 141373
Join Date: Feb 2007
Chapter/Region:
E. Canada
Location: Quebec, QC
Vehicle:2022 Crosstrek Sport 6MT |
it'd be nice to clear that up once and for all. So 642s for EJ251 and 770 for EJ253? Is there any difference in between coolant passages on the head in these two N/A engines?
|
02-06-2013, 01:00 PM | #24 |
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region:
RMIC
Location: Teh Ghetto Garage, CO
Vehicle:99 2.5RS, '85 911 '73 914 and 2012 BRZ |
Maybe I'm mistaken. Wouldn't be the first time. I just know I won't use anything but an MLS on my own engines.
|
02-06-2013, 07:19 PM | #25 |
Scooby Guru
Member#: 5218
Join Date: Mar 2001
Chapter/Region:
MWSOC
Location: SAUL'S Motorsports
Vehicle:96L Most Over- Developed Beater |
Like Matt above, I only use MLS gaskets and rarely from the OEM parts bin. I admit I'm lost on all the latest part numbers for gaskets.
I also admit that I don't see return work for failed MLS gaskets..... Jay |
Thread Tools | |
Display Modes | |
|
|