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Sent from my iPhone using Just T4s
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Sent from my SM-G930F using Just T4s
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Originally posted by S49 View PostThat parking spot is almost in the Atlantic looks great.
Camped here a few years back, in the very same space - as we rolled into the car park this morning it was empty... Perfect! Spent the day there, walking the coast path, then chilling... Watching the waves on the rocks and listening to some music. [emoji106]
Sent from my Moto G (4) using Just T4s'00 1.9TDI LWB, '87 Mk2 Golf 16v
Wheel or tyre question? Just ask, it's what i do!
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Last edited by regcheeseman; 8 April 2018, 11:25 PM.
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Okay, so I've been starting some engine mods, which means some dismantling was needed... And it's produced a question, a question for those with turbo experience - you know who you are!
First pic is the compressor housing from my ABL turbo - very rough on the inside, has something beaten it up? Compressor wheel is perfect, no dents to the blades etc. Or is it just poorly finished from the factory?
Second is the compressor housing from the AHU turbo - smooth internal surface, it done less miles, about 50k less.
The only thing different, from what I can tell is where the pressure for the N75 feeds from.
Shall I take this opportunity to swap the housings over? Even though the ABL turbo was boosting fine? [emoji848]
Sent from my Moto G (4) using Just T4sLast edited by Adventure Van; 14 April 2018, 10:18 PM.'00 1.9TDI LWB, '87 Mk2 Golf 16v
Wheel or tyre question? Just ask, it's what i do!
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Reads like the ABL compressor housing has been worn by the compressor wheel. Should be smooth. Check the compressor wheel blade tips. Pinch each blade and draw your pinch off of it . It should not catch and be super smooth. Was there a large rubber 'O' ring recessed in the housing? Check the shaping of the two housings. They look different in the pics, be careful when trying the AHU over the ABL compressor wheel. Don't worry about the boost feed but make sure the mounting bracket for the wastegate actuator is located in the same spot otherwise your pre-load tension will change. You'll need to try and match the ABL to AHU tesion possibly from a new angle, mounting position etc. So mock it up first! Might need boost pipes...
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Originally posted by Activ8 View PostReads like the ABL compressor housing has been worn by the compressor wheel. Should be smooth. Check the compressor wheel blade tips. Pinch each blade and draw your pinch off of it . It should not catch and be super smooth. Was there a large rubber 'O' ring recessed in the housing? Check the shaping of the two housings. They look different in the pics, be careful when trying the AHU over the ABL compressor wheel. Don't worry about the boost feed but make sure the mounting bracket for the wastegate actuator is located in the same spot otherwise your pre-load tension will change. You'll need to try and match the ABL to AHU tesion possibly from a new angle, mounting position etc. So mock it up first! Might need boost pipes...
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No sign, or feel of any damage to the compressor wheel blades (could it have been rebuilt at some point?).
Pictures are a bit misleading in terms of sizes - but I will check with a vernier caliper. Part numbers are the same except for the last letter (VW part no. that is...).
Outlets are the same diameter (a very awkward 36mm), but I am redoing the boost pipes/elbows - trying to make the flow smoother and less restrictive. I'm fitting a PD130/150 inlet manifold, to improve air flow and to help make the hose runs shorter - manifold is from a Passat/A4 so the inlet is on the gearbox side.
Because of the taller manifold design, I will have to 'clock' the turbo upwards slightly to clear it (didn't want to go downwards as I want happy running the boost pipes past the hot exhaust manifold). Had to modify the inlet slightly for clearance on the compressor housing...
Should still be enough room to put part of the OE ABL heat shield back in though.
Sent from my Moto G (4) using Just T4sLast edited by Adventure Van; 15 April 2018, 07:34 AM.'00 1.9TDI LWB, '87 Mk2 Golf 16v
Wheel or tyre question? Just ask, it's what i do!
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