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alaskadan
Samba Member
Joined: January 09, 2013
Posts: 1857
Location: anchor pt. alaska
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 Posted: Sat May 27, 2023 10:09 am Post subject: Subaru valve adjustment |
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Something I haven't seen much mention about here is adjusting the valves on our ej 2.5 engines. I have an 07 EJ 2.5 in my 87 syncro. I had both heads fully rebuilt recently. It's a reputable shop and I said to rebuild anything necessary on the heads. Why? Burnt exhaust valve likely due to not adjusting it.? Honestly I thought there was a hydraulic cap on the valve tip from something I'd read on the interweb. I know that to be wrong now.
I asked the shop owner if I needed to adjust them soon, he said no. Thoughts? |
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hardway
Samba Member
Joined: January 03, 2012
Posts: 416
Location: Fidalgo Island
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| Posted: Sat May 27, 2023 11:29 am Post subject: Re: Subaru valve adjustment |
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| The twin cam EJ Subaru motors use shims to adjust valve clearance. I have seen the turbo motors burn exhaust valves from lack of clearance. The single cam heads use adjuster screws. Checking the lash occasionally on any solid tappet engine is a very good idea. If in spec just change the gaskets and button her up. If your twin cam needs adjustment it is a real pain. |
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alaskadan
Samba Member
Joined: January 09, 2013
Posts: 1857
Location: anchor pt. alaska
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| Posted: Sat May 27, 2023 12:08 pm Post subject: Re: Subaru valve adjustment |
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| Yes thank you. Not hard to adjust. The worst part is the small car engine hanger and exhaust is in the way. My main question is adjusting them soon after a head rebuild. |
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johnny l
Samba Member
Joined: January 11, 2023
Posts: 28
Location: VT
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| Posted: Sat May 27, 2023 5:31 pm Post subject: Re: Subaru valve adjustment |
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| i work on alot of subarus .normally adjust them once and your good |
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dobryan
Samba Member
Joined: March 24, 2006
Posts: 16503
Location: Brookeville, MD
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vanis13
Samba Member
Joined: August 15, 2010
Posts: 3093
Location: ABQ NM USA.... Except when not
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| Posted: Wed Jun 07, 2023 9:43 pm Post subject: Re: Subaru valve adjustment |
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| alaskadan wrote: |
| My main question is adjusting them soon after a head rebuild. |
I have the (unverified) belief that newly rebuilt valves will benefit from an early check/adjustment due to the seating of the valves in the seat.
....at least that's what I'll be doing with my rebuilt heads on a new OEM shortblock.
Now the questions is - what mileage this early check/adjustment will be.
_________________
83.5 Westy with Subaru 2.5, 4 spd manual, center seat, COLD A/C on 134a!, Winter camp heated with an Espar B4 gasoline furnace
www.SuperVanagon.com - some stuff I make |
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