Fuel injection rebuild

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fourier
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Re: Fuel injection rebuild

Post by fourier » Wed Sep 11, 2019 9:00 pm

Simmy wrote:
Wed Sep 11, 2019 4:40 pm
I want to make the cooling system bullet proof, hence the time spent on those details.
I share your goal in trying to get the cooling system functioning as well as possible...and that does not just mean cooling.

With my latest build, I've set out to make the stock cooling system as good as I can get it. I've spent a lot of time finding good OEM tin, as the aftermarket parts simply don't fit properly. The engine has every piece of sheet metal, and functional thermostatic controlled flaps, as it did when it left the factory. I tested the thermostat before installing it, and added an oil temperature warning switch, just for insurance against a failed thermostat.

The engine has done just over 200km (early days, I know), but I have yet to see the thermostat open fully. Although free to operate, the thermostat does not need to open fully, as the engine runs cool, even with higher compression ratio. Good to know there is some cooling in reserve...

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A few pieces cleaned, before paint...
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Painted
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Oil temperature warning switch
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Switch installed
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(o= i =o) (o\ ! /o)

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Re: Fuel injection rebuild

Post by acpaterson » Thu Sep 12, 2019 3:46 pm

My OCD wouldn't be able to deal with those crooked pea-shooters!

Ricoffy
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Re: Fuel injection rebuild

Post by Ricoffy » Fri Sep 13, 2019 3:19 pm

Looks very good!
Trust me, I'm a doctor...

Simmy
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Re: Fuel injection rebuild

Post by Simmy » Fri Sep 13, 2019 3:48 pm

fourier wrote:
Wed Sep 11, 2019 9:00 pm
Simmy wrote:
Wed Sep 11, 2019 4:40 pm
I want to make the cooling system bullet proof, hence the time spent on those details.
I've spent a lot of time finding good OEM tin, as the aftermarket parts simply don't fit properly. The engine has every piece of sheet metal, and functional thermostatic controlled flaps, as it did when it left the factory
Thankfully I have all of the same tin, even if it isnt in as nice a condition... except for the venturi ring. Thinking about it, I dont think the shroud actually has holes to even fit it? Was this available for specific years? Perhaps dropped in more recent models?
In the anbsence of it, I am just going to seal off the cooling system holes/gaps as best I can. U-channel rubber seems to do a reasonable job of it, but will experiment as I go.


acpaterson wrote:
Thu Sep 12, 2019 3:46 pm
My OCD wouldn't be able to deal with those crooked pea-shooters!
I would like to think thats just an optical illusion... and besides... its nothing a big hammer couldnt fix! :D

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Wentzel
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Re: Fuel injection rebuild

Post by Wentzel » Fri Sep 13, 2019 6:23 pm

I bought an engine long ago that was sealed up with silicon between plates, casing and gaps. Not always pretty but can be done neatly and I like to believe it helps quite a bit.
Oxyboxer Project

Never Ending Beetle Project viewtopic.php?f=23&t=35724
Lolette Spyder Project http://www.aircooledvwsa.co.za/viewtopi ... 23&t=32175

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fourier
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Re: Fuel injection rebuild

Post by fourier » Fri Sep 13, 2019 9:20 pm

Well spotted! The venturi ring is an addition, to help improve the efficiency of the stock fan. I've only ever seen two late model engines that had them fitted from the factory. They were spot welded to the doghouse shroud, so no holes present. I started doing research on them, and eventually imported a few from the States for my engines. They pop rivet in place, and quite an easy install.

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Good plan to seal off all the gaps as you've suggested. Don't forget the Hoover bit, and a good seal between the oil cooler and dog house. Every bit of air, going in the right direction, helps.

Al, your OCD can take a rest on this one...it's just an illusion :wink:
(o= i =o) (o\ ! /o)

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Re: Fuel injection rebuild

Post by Simmy » Wed Sep 18, 2019 5:09 pm

Nearly done with tinware. Fuel lines trial fitted - I really like these AN fittings!

Now I need to find a powder coated. Can anyone recommend someone in the JHB area that won't bend or blast the #*£@ out of the parts?

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Tony Z
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Re: Fuel injection rebuild

Post by Tony Z » Thu Sep 19, 2019 7:32 am

that really is looking pretty!!!
just make sure you can get to those bulkhead fittings once the engine is installed, with the exhaust still fitted. It'd be a shame for you to go through all that effort and then have to remove the exhaust before you can disconnect the fuel lines.
You need a 36hp doghouse shroud to tidy up the final look

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