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Northendroid

1.8L 8V G60 with AEB Block - lots of pics

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Hi folks:

 

Some of the info has already been posted in another thread but I thought I'd start an engine build thread should someone like to try this hybrid build.

 

1991 Corrado PG block 1.8L 8V G60, little history car sat for four years ran but has an engine knock, oil light on, makes no power. Reading through previous owners paperwork two items come to light one is the car is bored to 83mm and the second is it went through a lot of head gaskets. Was going to rebuild the PG engine until I came across an brand new AEB block with crank and intermittent shaft installed. Was cheaper buying this block than it would have been to do the PG block re-work. AEB blocks are used in Passats and Audi B5 A4 the early AEB is a 056 with an external water pump while the later model is an 06A which has an internal water pump.These are 056 with external water pump like the PG block.

CH4x3wd.jpg

 

Will be using stock 81mm pistons with new rings, stock conrods bolt up to the AEB crank conrod journals:

um2O9iq.jpg

 

 

Here is a list of mods that need to be done to the block to work with the PG 8V head and G-Ladder:

 

Biggest mod is the rear support bracket of the G-Ladder requires a 5mm aluminum plate welded to it, machined to the shape of the crank vent port and a port tapped for a #10AN fitting which will be routed to the the G-Ladder return. This will supply additional lubrication to the supercharger.

 

Rear G-Ladder support bracket:

hqvz3GR.jpg]

 

Modified to fit in the area:

9IwY3Yd.jpg

 

Knock Sensor Location:

3ClxaqK.jpg

 

Drill thru block and tap this existing bolt hole to accept the G-Ladder oil return

TyZPS8M.png

 

TCROoHe.jpg

 

Install a frost plug:

0jUDL7b.jpg

 

Install crank position sensor (not used - only fills the hole):

1ccxo4z.jpg

 

An AEG head gasket is used with the stock 8V head, the three rear oil journals will be blocked when using this gasket:

UIHHUsK.jpg

 

Purchased BBM Stage 4 chipped ECU, 3.5 bar FPR, 268/260 cam, 65mm pulley

S9bM9Ht.jpg

 

The intermittent shaft gear is the same pitch as the PG distributor:

cYJUxfQ.jpg

 

The distributor and oil pump must match, PG distributor gear/oil pump have a slotted setup, while the AEB setup has a spline gear and oil pump:

PG distributor gear and oil pump slotted shaft

dNJLTjx.jpg

 

AEB spline gear :

D1gmep8.jpg

Edited by Northendroid
Fix photos after PhotoBucket held everyone hostage wanting $400 to host their pvictures

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Thanks odub!

 

The back of the rear G60 support bracket machined flat and a 5mm aluminum plate welded to the back of it:

[xjrRerL.jpg Thanks to sdezego for photo!

 

Then it will fit like this, a hose is ran to the G-ladder return for additional lubrication of the G60:

[ESOy4RC.jpgThanks to sdezego for photo!

Edited by Northendroid

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Started cleaning the internals to be swapped into the brand new AEB block for the Corrado. Soak the pistons in Berryman Carburetor & Parts Cleaner for 24hrs carbon wiped right off, re-soaked for another 24hrs, all piston ring grooves are squeaky clean. Top of the piston not perfect but lot better than what I started with

 

700EKvR.jpg

f9emUub.jpg

Edited by Northendroid

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Bit of an update,clean carbon on the other three pistons, took the G-lader apart no play in the bearings,cleaning the internal surfaces and inspected for damage and hairline cracks, all good :D

Heading to my local bearing shop and see if I can source the following for G-Lader rebuild. I'd rather start fresh and know what been replaced in the G-lader.

 

Viton Seals:

 

1 x NAK TCY 20.35.7V

1 x NAK TBGV 30.52.6V

1 x NAK TGR 30.45.6V

2 x NAK TGH1 30.42.5.5/6V

 

Bearings:

 

1 x F-A-G NU202E M1A Outlet Port

1 x F-A-G 6003 2Z C3 Front Intermittent Shaft

1 x F-A-G 6002C 2HRS C3 Rear Intermittent Shaft

1 x F-A-G 6304 C3 Inlet Port

1 x Torrington 10 689A Displacer

1 x F-A-G 310 74336 (small bearing on displacer)

 

Will follow up with availability and pricing.

Found a MK1 TT AWU intake manifold for the 1.8L 20V G60 build. Guy also had the phenolic intake manifold transition spacer.

 

Will need blasting and repaint:

SRqmVpt.jpg

Next item to find is a OBD-1 ABA throttle body.

Edited by Northendroid

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Yeah would be nice wouldn't it. Took me 2 years of scrimping saving and working my arse off to afford my build lol

 

STU175

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Yeah I know mine will be it first year come summer, got lots of prep and painting of engine parts coming up this summer before even ordering engine rebuild parts so I can keep moving forward. Next purchase is a media blaster (soda and glass bead) and HVLP spray gun. Oh and forgot to post picked up Mocal oil filter sandwich and fittings, also used oil cooler rad and lines.You still running the stock G60 intercooler or FMIC?

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It had been a while since I've gone thru your build thread, went thru it again and love what you did to engine bay, really cleans it up. Also love your choice of wheel! Where did you relocate the fuse box?

Edited by Northendroid

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The wiring for lighting and power is routed through chassis leg the rest just rerouted. I wanted to do as much as I could without cutting and lengthening the original loom.

The only wiring I had to lengthen was coil and expansion tank and I remade the starter and alternator power cables and earth's also

 

STU175

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Like the reroute through chassis idea, did you eliminate cruise control? I have no issues with redoing or lengthening wires, if done properly it won't be an issue. Can't remember if you replaced the heater core while you had the dash out? Eventually when the 1.8L 20V G60 is built I'm going with a MegasquirtII management system, a whole new megasquirt harness and will strip away the ECU wires from the OEM harness. The idea is to rebuild the 1.8L 8V G60 with the first AEB block so I can get the car on the road sooner. Then concentrate on the 20V. build. LOL just re-looked at your picture of the bay, keep forgetting this is right hand drive car. :bonk:

You guys drive on the correct side of the road right!

Edited by Northendroid

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never had cruise control.

i never took the dash out in the end just lower panels gave enough access.

i just didnt want to have even more of it apart at that stage

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Bought an AWU intake manifold for my AEB 1.8L 20V. G60 build, it came with phenolic transition gasket but was missing the small port metal gasket is #058129717D the correct part number?

 

Stripped:

nHMlYFn.jpg

 

Prepped:

U6roSmC.jpg

 

Baking in the Oven :thumbleft:

t4fX2iJ.jpg

Edited by Northendroid

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