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Stilbo
Samba Member
Joined: April 19, 2021
Posts: 5
Location: Bloomington, Indiana
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 Posted: Sat Jul 05, 2025 10:53 am Post subject: Hydraulic lifter adjustment? |
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Bought my ‘74 Base T1 a few months ago..
The previous owner installed a 1776 engine with a 2bbl Weber, performance exhaust and hydraulic lifters from MoFoCo and it’s a great little engine power wise..
But…
2 pushrod tubes on the left side are leaking with only 1,430 miles on the engine
I’m still treating it like it’s in break-in mode.
I love the idea of hydraulic lifters in my T1. Over more than fifty years I’ve owned several T1’s, a couple Ghias and three split window T2’s.. and I’m happy not having to adjust valves. I used to enjoy doing that as a part of my Keeping My V-Dub Alive meditation but at 70 I’m not really interested in laying on the floor more than I need to.. it’s beyond being capable of.. it’s more hating the thought of being found there…
I plan on buying a set of pushrod tubes that don’t require removing the heads. I’m sooo damned happy those are available since I have memories of pulling heads just to replace seals….
Anyway,
MoFoCo may build great engines but their lack of response to questions sucks.
Therefore I’m asking questions here.
Does anyone know or care to explain the procedure for adjusting valves with hydraulic lifters? Or can someone post a link?
I actually own three vintage Harley-Davidsons and two vintage R100 BMWs and none of them leak.. really.
I’d like my Beetle to join the leak free club.
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passionre
Samba Member
Joined: November 28, 2021
Posts: 103
Location: Oklahoma
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| Posted: Sat Jul 05, 2025 11:21 am Post subject: Re: Hydraulic lifter adjustment? |
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| Stilbo wrote: |
Bought my ‘74 Base T1 a few months ago..
The previous owner installed a 1776 engine with a 2bbl Weber, performance exhaust and hydraulic lifters from MoFoCo and it’s a great little engine power wise..
But…
2 pushrod tubes on the left side are leaking with only 1,430 miles on the engine
I’m still treating it like it’s in break-in mode.
I love the idea of hydraulic lifters in my T1. Over more than fifty years I’ve owned several T1’s, a couple Ghias and three split window T2’s.. and I’m happy not having to adjust valves. I used to enjoy doing that as a part of my Keeping My V-Dub Alive meditation but at 70 I’m not really interested in laying on the floor more than I need to.. it’s beyond being capable of.. it’s more hating the thought of being found there…
I plan on buying a set of pushrod tubes that don’t require removing the heads. I’m sooo damned happy those are available since I have memories of pulling heads just to replace seals….
Anyway,
MoFoCo may build great engines but their lack of response to questions sucks.
Therefore I’m asking questions here.
Does anyone know or care to explain the procedure for adjusting valves with hydraulic lifters? Or can someone post a link?
I actually own three vintage Harley-Davidsons and two vintage R100 BMWs and none of them leak.. really.
I’d like my Beetle to join the leak free club.
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Taken for Mofoco website.
"Volkswagen Bug, Beetle, Type 1 aircooled hydraulic lifters
These are the ONLY Aircooled Volkswagen "DROP IN" hydraulic lifters on the market. Requires NO CASE MACHINING! Mofoco designed these lifters over 20 years ago back in 1989 as pioneers in the market. Never do a valve adjustment again! Fits all motors 1600cc and up.
Hydraulic lifters reduce lifter noise, cam wear, and extend the life of your motor.
To set these, you simply turn the adjuster screw in 1 1/2 turns after zero lash.
Once they are set, you can forget about them! So easy to install, you'll wonder why you waited so long!".
Just make sure you are on TDC for each cylinder. Adjust screw until it touches and removes clearance, plus an additional 1.5 turns of the screw. |
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Stilbo
Samba Member
Joined: April 19, 2021
Posts: 5
Location: Bloomington, Indiana
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| Posted: Sat Jul 05, 2025 11:47 am Post subject: Re: Hydraulic lifter adjustment? |
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Thanks!
I apparently didn’t check MoFoCo’s website.
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Starbucket
Samba Member
Joined: April 30, 2007
Posts: 4213
Location: WA
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| Posted: Sat Jul 05, 2025 2:01 pm Post subject: Re: Hydraulic lifter adjustment? |
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| Since hyd. lifters can leak down when sitting you won't know when you have zero lash so be prepared to get some oil on you, Jack up one side at a time, remove one sides valve cover get a box wrench for the lock nut and pre loosen it so a 1/2 turn will loosen the adjuster screw, start the motor and while it's idling loosen one lock nut (leaving the wrench on the nut) and back the adjuster screw out until the valve starts "clattering" then screw it in 1 1/2 turns and lock the nut, repeat on the other valves. |
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