Ultrasonic cleaning : the benefits

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silverbullet
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Ultrasonic cleaning : the benefits

Post by silverbullet »

I have got this early 1.9 VW exchange engine in
for an upgrade to 2.1 DJ spec. It was a leaky mess, thanks to having been assembled with the wrong gasket under the fuel pump spacer, which enablednit to huff and puff oily vapours since 1980 (it is remarkably original in almost every respect)
As per usual, I gave it a good scrubdown with brake cleaner before dismantling and then gave it to my local engine shop to put in their hot ultrasonic cleaner. I arranged to collect it when still hot (80°C) wrapped it up and rushed it back to the works to swap a few iffy head studs. Four were changed with no dramas!
Well, I cannot believe how good it has turned out. This has to be one of the best cases I have ever seen, its a corker.
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Re: Ultrasonic cleaning : the benefits

Post by silverbullet »

The benefits should be pretty obvious but consider that it just uses a hot detergent solution, so all the oilways (remove all plugs!) get cleaned out and there is virtually no residue left anywhere, just a little dusty fine sediment that needs brushing amd airline vlasting to clear away.
Old sealant, oil varnish, gaskets etc just falls off.
Also steel corrosion flakes will dropnoff, which helps to identify any suspect head studs...
Much safer than bead blasting and less labour intensive than soda blasting, it cleans more thoroughly.
Its worth searching out a business that has this kit. To give an idea if cost, I was charged £60 to clean this case, a pair of AMC wbx heads and my wbx6 heads with rocker covers. It saves time and returns better results than I could ever hope to achieve with just manual cleaning.
85 syncro Caravelle twin slider Oettinger T3200E-6
90 SA Microbus supercharged wbx/UN1 project

http://www.025motorsport.com

davidoft1
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Re: Ultrasonic cleaning : the benefits

Post by davidoft1 »

Good isn’t it, I’ve had stuff cleaned by my local engine place for years , it’s cheap, very thorough and very clean, I expect the case has benefited from being covered in oil all those years too

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Re: Ultrasonic cleaning : the benefits

Post by Stesaw »

This is what I plan on doing with my 2.1 build, Once I've got the knackered studs out that is.
1985 LeisureDrive 1.9DG 5 Speed- Syncro project.. soon.. ish..
1987 Syncro JX- Donor

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Re: Ultrasonic cleaning : the benefits

Post by silverbullet »

Stesaw wrote: 10 Dec 2020, 22:23 This is what I plan on doing with my 2.1 build, Once I've got the knackered studs out that is.

I always work on the head studs with the case hot. My approach used to be to use a big propane torch to locally heat the case, with it secured on an engine stand, then use a self-tightening chuck-type stud extractor, done up really red-faced tight and positioned as low as possible on the stud. My one is by Franklin tools iirc.

But by working on a completely hot case you can remove several studs in one hit before it cools off, as long as it is insulated. Transport blankets seem to work well.
85 syncro Caravelle twin slider Oettinger T3200E-6
90 SA Microbus supercharged wbx/UN1 project

http://www.025motorsport.com

Stesaw
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Re: Ultrasonic cleaning : the benefits

Post by Stesaw »

silverbullet wrote: 11 Dec 2020, 19:51
Stesaw wrote: 10 Dec 2020, 22:23 This is what I plan on doing with my 2.1 build, Once I've got the knackered studs out that is.

I always work on the head studs with the case hot. My approach used to be to use a big propane torch to locally heat the case, with it secured on an engine stand, then use a self-tightening chuck-type stud extractor, done up really red-faced tight and positioned as low as possible on the stud. My one is by Franklin tools iirc.

But by working on a completely hot case you can remove several studs in one hit before it cools off, as long as it is insulated. Transport blankets seem to work well.
From the experience I had with head bolts I can see having the whole case hot would be a benefit for sure. I have one of those chuck type extractors, I managed to break two of the teeth.. cheap tat I guess. Still irritated by it but it did the job.. mostly  :rofl
1985 LeisureDrive 1.9DG 5 Speed- Syncro project.. soon.. ish..
1987 Syncro JX- Donor

weimarbus
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Re: Ultrasonic cleaning : the benefits

Post by weimarbus »

thank you for posting this SB, do you have his contact details please, I have two cases that need cleaning 1x WBX and 1x Aircooled can't bear to spend more hours in the garage for poor results :ok
1985 hi-top 2.1MV with DG carb and LPG
1955 trials buggy with 1.9 DG high lift cam and twin dell's (now sold)
1972 1303 beetle
1992 Audi 100 2.8 quattro estate
1967 Vw  Madison kit

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Re: Ultrasonic cleaning : the benefits

Post by silverbullet »

Give me 36 hours from the time of this post and I might have aquired one though an auction on ebay for my business ;)
85 syncro Caravelle twin slider Oettinger T3200E-6
90 SA Microbus supercharged wbx/UN1 project

http://www.025motorsport.com

weimarbus
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Re: Ultrasonic cleaning : the benefits

Post by weimarbus »

:ok
1985 hi-top 2.1MV with DG carb and LPG
1955 trials buggy with 1.9 DG high lift cam and twin dell's (now sold)
1972 1303 beetle
1992 Audi 100 2.8 quattro estate
1967 Vw  Madison kit

Stesaw
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Re: Ultrasonic cleaning : the benefits

Post by Stesaw »

silverbullet wrote: 12 Dec 2020, 08:38 Give me 36 hours from the time of this post and I might have aquired one though an auction on ebay for my business ;)

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1985 LeisureDrive 1.9DG 5 Speed- Syncro project.. soon.. ish..
1987 Syncro JX- Donor

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Re: Ultrasonic cleaning : the benefits

Post by silverbullet »

Well it looks like I've accidentally got into the cleaning business. Happy days, we were the only bidder!

A good way to celebrate Holman Engineering's 60th anniversary today :)

Once we've got it here and processed a few test pieces (cases, injectors etc) we will work out a pricing structure along with the T&C's ;)
85 syncro Caravelle twin slider Oettinger T3200E-6
90 SA Microbus supercharged wbx/UN1 project

http://www.025motorsport.com

weimarbus
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Re: Ultrasonic cleaning : the benefits

Post by weimarbus »

Well done, let me know when you are up and running :D
1985 hi-top 2.1MV with DG carb and LPG
1955 trials buggy with 1.9 DG high lift cam and twin dell's (now sold)
1972 1303 beetle
1992 Audi 100 2.8 quattro estate
1967 Vw  Madison kit

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