1970 stock bus 1600 cc upright engine

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ruckman101
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Re: 1970 stock bus 1600 cc upright engine

Post by ruckman101 » Fri Jun 24, 2016 4:59 pm

Now that's a thought. Thanks.

neal
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Re: 1970 stock bus 1600 cc upright engine

Post by ruckman101 » Sat Jun 25, 2016 1:38 pm

Sigh.

I went with a single shim, and now have deck heights of .056 and .053 respectfully, giving me compression ratios of 7.69:1 and 7.74:1. I was hoping it would be a bit lower. I could go back to a double stack that in theory would put me at deck heights of .066 and .063 and compression ratios of 7.5:1 and 7.57:1. This is with the paper gasket. I have a different brand of paper gaskets that are slightly thicker. If I used the thicker one's on the taller side with less deck height, I calculate .066 and .067, with compression ratios of 7.53:1 and 7.51:1.

Higher compression with a single shim? or as spot on as possible with a stack of two shims?


neal
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Re: 1970 stock bus 1600 cc upright engine

Post by ruckman101 » Mon Jun 27, 2016 1:14 pm

Ok, I had an epiphany, the paper gasket should go against the case, not the cylinder base. And then I went and did something entirely un-American, and read the directions on the permatex. Lightly coat both surfaces and let dry a few minutes before putting them together. I don't think I'll be leaking oil from the base of my cylinders now as I was.

Now there's the gasket that goes between the manifold and cylinder head. It's of metal rolled, so has a split on one side that I have been putting down. Should it go up?

And I have a compression ratio I can live with. Despite a thicker paper gasket on one side, I still have a .003 difference in deck heights. Side 1/2 measured .059, and side 3/4 .062. This gives me compression ratios of 7.64:1 and 7.59:1. So it will be.


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hambone
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Re: 1970 stock bus 1600 cc upright engine

Post by hambone » Wed Jun 29, 2016 1:35 pm

About time.
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ruckman101
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Re: 1970 stock bus 1600 cc upright engine

Post by ruckman101 » Wed Jun 29, 2016 3:40 pm

I thought time was relative.

neal
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Re: 1970 stock bus 1600 cc upright engine

Post by ruckman101 » Wed Jun 29, 2016 5:35 pm

Hey, guess what. The post connecting the flaps to the thermostat doesn't go through the outer hole of the head. Now if I hadn't waited until the engine was in the bus to put the thermostat on, I wouldn't now be driving without it for 500 miles before I pull the engine to check the torque on the heads. Always something it seems.

Other than that, it's back together and ready for a test run.


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ruckman101
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Re: 1970 stock bus 1600 cc upright engine

Post by ruckman101 » Wed Jun 29, 2016 5:46 pm

Oops, forgot to adjust the valves. Getting close though.


neal
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hambone
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Re: 1970 stock bus 1600 cc upright engine

Post by hambone » Wed Jun 29, 2016 6:49 pm

Muir says leave the thermostat off.
http://greencascadia.blogspot.com
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat

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ruckman101
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Re: 1970 stock bus 1600 cc upright engine

Post by ruckman101 » Wed Jun 29, 2016 7:57 pm

The most vicious wear and tear on an engine is during the minutes it takes to reach operating temperature. Since I have one, I will use it and hedge my bets.

On another note, test run went well, missing power is back.


neal
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hambone
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Re: 1970 stock bus 1600 cc upright engine

Post by hambone » Wed Jun 29, 2016 8:44 pm

You knew all along. See "Camping", hope you can join me out there for a spell this July.
http://greencascadia.blogspot.com
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat

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ruckman101
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Re: 1970 stock bus 1600 cc upright engine

Post by ruckman101 » Wed Jun 29, 2016 8:49 pm

Looking forward to it.

neal
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hambone
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Re: 1970 stock bus 1600 cc upright engine

Post by hambone » Wed Jun 29, 2016 9:13 pm

Also try Lucas fuel treatment. Randy said yeah I said "what-ever" but I tried it anyway and it is incredible.
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http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat

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ruckman101
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Re: 1970 stock bus 1600 cc upright engine

Post by ruckman101 » Wed Jun 29, 2016 11:00 pm

Say wha?

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wcfvw69
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Re: 1970 stock bus 1600 cc upright engine

Post by wcfvw69 » Thu Jun 30, 2016 5:47 am

hambone wrote:Muir says leave the thermostat off.
He must of been one of the first "hacks" then in the VW world! I live in blazing hot Phoenix. All three of my VW's have thermostats and flaps and every other part each engine came from the factory with. As it was mentioned, they help get the engine up to temperature much faster.

The other benefits of using the flaps and thermostats, especially when it gets to winter time include-

* Cold engine driveability. It also helps to have the stove pipe and oil bath pre-heat flaps working as designed along with clean, clear carb manifold risers and the choke adjusted right. You should be able to start the engine and drive off while the engine purrs beautifully.

* Heater output. The heater air gets hot much faster and is hot vs. not running a thermostat.

Growing up in S. California where VW's were everywhere in the 70's and 80's, I'd go to my VW repair shop. They had buckets of flaps and thermostats that they'd removed because they weren't needed in S. California's mild climate. Uh huh..
1970 Westfalia bus. Stock 1776 dual port type 1 engine. Restored German Solex 34-3. Restored 205Q distributor, restored to factory appearance engine.

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Re: 1970 stock bus 1600 cc upright engine

Post by Amskeptic » Thu Jun 30, 2016 6:10 am

wcfvw69 wrote:
hambone wrote:Muir says leave the thermostat off.
He must of been one of the first "hacks" then in the VW world!
thermostats weren't needed in S. California's mild climate. Uh huh..

People can't get out of their own bodies.
"Well, I am warm, so my engine must be . . . "

An engine is feeling chilly under about 150* in the case, and under 300* in the heads.
I will find out what temperature cleans the carbon off the valves and ports and we could use that number in the same way that oil temp of 212*+ is necessary to drive condensate out of the oil.
ColinChilly66*MinnesotaMorning
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles

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