Started to disassembly the VW Baywindow Highroof engine this weekend. A stock Type 4 1800cc AP case (no hydraulic lifters) and dual Solex carbs. Going to be rebuild from ground up and get some extra performance parts for even more torque! Plan is to resurface the heads, 96mm Porsche 914 cylinders, better carb setup and a better flowing exhaust system. Probably going to keep the stock camshaft ratio, because it gives maximum torque already around 2200 RPM, wich is perfect for a heavy bus and hills.

The engine was already unbolted when I got the bus and I did not know anything about it, more than it was a AP 1800cc VW type 4. I saw it was cleaned a little bit and the cylinders looked to have new paint on them. So somebody have started to restore it was my guess. But I saw that the lower cylinderhead cooling thins was missing, so I got a little suspicious about how good restored it really was going to be when important parts like that not was installed back. Hmm!

Here is some new pics…

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What I had to start with. Dirty old lump!

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Teardown started, cylinderheads is off! Something have happend in cylinder nr 1 at some point. It had small marks and dings on the combustionchamber and on top of the piston. Nothing to serious tho. Maybe a washer or parts of a valveseat? One of the valves was new too. Funny thing is that the piston that had marks was now installed in cylinder nr 2. Not a good thing to mix them up on old used cylinders. But doesn’t matter now since I will replace them with all brand new 96mm cylinders and pistons.

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The good thing is that the cylinderheads are the ones with partnumber ending with an “S”. And have the biggest valves VW ever put in any bus! Intake 41mm and exhaust 34mm. Bingo! Only Porsche 914 had bigger, and they also had a different angle on the sparkplugs for better performance/combustion. Heads will get rid of the headgaskets, resurfaced 0,5-1mm, new valve guides, new machined valveseats in a better material (Type 4 engines are famous for dropped valveseats) and new valves and new springs etc.

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When I pulled of the nr 4 cylinder I found a rag inside the case(!) Somebody probably forgot it there. Ig the engine had been started up it would not run for a long time thats for sure! It was now confirmed that a total crackhead had restored my engine before.

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Everything removed and all bolts and washers etc. Ready to split!

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Every part labeled and bagged, keeping it organized and clean is a must when building a motor.

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Inside of a VW type 4 engine

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Camshaft totally shot! And nr 1 cambearing was worn down to the copper. Camshafts are almost never in good shape on the Type 4 engines, even worse on the later ones with hydrauliclifters. Highpressure and not the best design on the cam/followers are the main reason for this.

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Crankshaft is out and looked to be in nice shape, bearings not to bad either. But will get replaced of course!

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Mainbearings

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The old 93mm (1800cc) cylinder and pistons, will get replaced with new 96mm and will make it to a 1911cc.

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Empty engine halves ready to be 100% clean

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Inspection done, cleaning next on the list. Degreaser and hot highpressure washing etc.

Have not got very much done lately. As my first son (1 year old) takes most of the time now. So that more important at the moment. But Im trying to push forward on the bus too, couple of hours after work and on weekends etc. Soon have all doors and lids in primer and then it all just needs a easy sanding and then its time for a paintjob! Have also sandblasted the fueltank cover and bellypan and got them painted and ready too. Hope to start rebuild of the 1800cc Type 4 engine in begining of February also!

More to come, but thats it for now, here is some pics…

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Blasted and epoxyprimer, ready for topcoat in VW factory greyish

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Baremetal then yellow epoxy/zinc primer

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Topcoat in VW L20a Marino Yellow with 2K polypaint with elastic characteristics. So the stones wont chip the paint. The gloss on the elastic is a little less, but this panel is under the car and you normaly never see it anyway.

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Slow with updates? Thats because I have been busy doing bodywork on the Highroof bus. A very boring, dusty and time consuming work. But now its in surffacer/filler/primer and ready for more sanding again, and hopefully thats it before paint. Paint for roof (white) and body (VW L20a Marino yellow) is bought. Still have all the doors and lids to do also! Got some new parts too, new lids for electric 240v hook up and fresh watertank filler with lock. A Vitrifrigio C60 fridge in stainless will chill the drinks and food nicely, its 60 liters and 10,5 liter is freezer. Danfoss compressor of course!

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Test fitted the Fiamma Turbo Vent 28×28 on the bus, better before than after paint! It has a built in fan on 12v that can blow out or in fresh air. Will be nice on warm summer days and night I think.

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Built this VW Beetle from a empty shell, back in 2010. Custom frontbeam, 3 splines in the rear, new industrial engine and dropped on polished Torque wheels. 

After a weekend of work on the bus roof its now in primer! Finally. It needed a ton of work, was alot of gelcoat cracks that needed to be sorted. And the left rear corner of the roof had been hit earlier in the bus life and needed to be fixed up nicer. Will test fit a new Fiamma rooflight/ventilation and then I can continue with the bodywork on rest of the bus. Looking forward to paint! But still a long way and lots of hours left…

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Some of the boards in the garage office. Neptune deck is signed by Jason Jessee, the framed original Santa Cruz poster is signed by artist Jim Philips, Jimbo Philips and Johnny Mojo (who designed/painted the Neptune board). A piece of skateboarding history right there!

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