Help please advice for my 1987 R31
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I don't remember hearing it before the coolant and bonnet escapade. I wonder if a couple of pulleys being filled with hot coolant was not to their liking? -
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By DraftySquash · Posted
Took her down to be the wedding car ❤️ and I love the people’s advice 😂 -
If you are going the simple route, this is all you need to do on the draining side. Just keep in mind that you are only replacing 30% of the fluid with each "spill and fill" - 3 litres in and the workshop manual says system capacity is 10 litres, and it recommends doing it 3 times. I can't do maths but chatgpt tells me it can, this is what % new fluid you have after each 3 litre flush: So you can see, you need 20 litres+ and 7 cycles if you want to get to 90%+ new fluid in the trans....slow and expensive! -
OK....now the mess starts. At the rear of the transmission is a 17mm drain plug. Put the oil pan under and remove the plug, you should get about 3 litres of fluid out (this is the pan capacity). I forgot to take a pic of the plug, so here is a marked up one I stole. Drain on the left (17mm) and fill on the right (in hex) I got about 3 litres from the drain plug, and even with 75,000klm (and 2 track days), it really looked like it needed a change.
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So, I'm not going to cover jacking up the car in detail, as I was using a quickjack, plus it will change per chassis you are working on. The main thing is to get the car high, level and stable, so take your time and find good spots for the stand. You are going to spend a lot of time working right under the middle of the car. If you have a hoist, or access to one, you are laughing. First you need to remove the transmission undertray. At the rear there are 2x 14mm headed bolts to undo. Unlike (apparently) the USDM model, you can easily get at both without the exhaust being in the way. While you can undo the undertray end of the bracket on one side (2x10mm head bolts), the other side is rivetted on so you can only undo the chassis side. At the front there are 2x 10mm headed bolts then the undertray slides backwards from under the mid tray, and out of the way.
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