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914World.com _ 914World Garage _ Missing Oil Pressure Valve?
Posted by: bkrantz May 9 2021, 01:36 PM
As I put my 2056 2.0 liter engine together, I find things that seem to be missing. This includes what the parts schematic shows as a second oil pressure relief valve (#19 and 21). I have the other valve (#18 and 20), and I am pretty sure #19 was not present when I tore the engine apart.
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Posted by: bkrantz May 9 2021, 01:37 PM
It would go here, between the push rods on the left side of the case.
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Posted by: bkrantz May 9 2021, 01:38 PM
And I have the screw cap and new crush washer.
Should a 73 2.0 have this valve?
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Posted by: 914Sixer May 9 2021, 02:04 PM
Missing spring and piston.
Posted by: Mark Henry May 10 2021, 04:52 AM
If it's a 1975- or replacement case check to see if the case is even drilled for the lifter relief.
I have a couple of '75 cases here that are not drilled.
Posted by: mate914 May 10 2021, 05:44 AM
Why did they make that change? The 2.0 im running now looks like that, with no hole tapped into case. It also had no spot to put taco plate with temp sensor.
Matt
Posted by: DRPHIL914 May 10 2021, 06:14 AM
As Mark said, you are missing the piston and spring, get the one from Tangerine Racing, its an "upgrade"
Phil
Posted by: 914Sixer May 10 2021, 06:17 AM
I may have parts. I used high pressure set up for my engine. Check warehouse later today.
Posted by: Mark Henry May 10 2021, 06:23 AM
Why did they make that change? The 2.0 im running now looks like that, with no hole tapped into case. It also had no spot to put taco plate with temp sensor.
Matt
They stopped drilling them for the bus with hydraulic lifters. The circuit is not needed, in fact I disable this relief on performance builds.
I don't think I've seen a T4 case with no taco plate.
Posted by: Mark Henry May 10 2021, 06:27 AM
get the one from Tangerine Racing, its an "upgrade"
Phil
Wrong relief valve, OP is talking about the lifter relief valve.
Although EMW does sell a block off kit for the lifter relief valve.
Posted by: DRPHIL914 May 10 2021, 06:29 AM
get the one from Tangerine Racing, its an "upgrade"
Phil
Wrong relief valve, OP is talking about the lifter relief valve.
Although EMW does sell a block off kit for the lifter relief valve.
gotcha, thanks for the correction , sorry for the confusion, i didnt look closely
Posted by: mate914 May 10 2021, 08:11 AM
Why did they make that change? The 2.0 im running now looks like that, with no hole tapped into case. It also had no spot to put taco plate with temp sensor.
Matt
They stopped drilling them for the bus with hydraulic lifters. The circuit is not needed, in fact I disable this relief on performance builds.
I don't think I've seen a T4 case with no taco plate.
It is just the taco plate cover. The case was not machined for temp sensor.
Posted by: pilothyer May 10 2021, 09:59 AM
It would go here, between the push rods on the left side of the case.
In this picture it looks as though the piston is still in there. ***Correction*** I can now clearly see that the piston is not there. What I was looking at is the seat for the piston and the galley behind the seat. You need this and your engine will greatly suffer without it.
Posted by: Mark Henry May 10 2021, 10:38 AM
It would go here, between the push rods on the left side of the case.
In this picture it looks as though the piston is still in there.
Ah yes, my bad, this is machined for the relief valve.
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