Non-BMW Stuff on a BMW Forum
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The one side of the piston is a bit more scuffing that I have usually seen on an M20. When I asked the machinist/engine builder about it he said it is no concern/as long as the cylinder bores are clean.
That's kind of what I've read too. The cylinders are all clean and there are no visible vertical scratches in them. The cylinder I took pictures of is the cylinder that 2nd piston came out of.
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Just polish them up and use new rings. Check the ring gaps. The cylinders look nice. Any lip at the top where the rings don't touch?
Zero lip on the cylinders. They're in really good shape, which is why I just wanted to hone, new rings and bearings and put it back together.
I've never done a full rebuild on an engine before, so there's really no reason for this other than its something I've wanted to do. And the m20 is so affordable to rebuild.
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Zero lip on the cylinders. They're in really good shape, which is why I just wanted to hone, new rings and bearings and put it back together.
I've never done a full rebuild on an engine before, so there's really no reason for this other than its something I've wanted to do. And the m20 is so affordable to rebuild.
The cast iron used is very high quality. The one I rebuilt that had unknown miles higher than 280k before the odometer quit working still had no lip at all and just needed a light honing and new rings.
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Crank out. Block mating surface cleaned up. And valves are all lapped.
Next I’ll pull the block out into the driveway and pressure wash and then drop it off to get honed. Finish assembling the head.
I think I’d like to get this back together before December so it can go into the car between the end of year and next June. Some big life events that will make car time limited.
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My clunky drivetrain is getting a little clunkier.
Gonna jack it up and check the mounts and make sure nothing’s loose. If there’s nothing obvious then looks like I’ll be tackling guibo, CSB, and diff bushing.
Edit - checked the engine mounts, transmission mounts, guibo bolts... all tight. So, I’m not sure. It has gotten progressively worse. It used to be a single clunk where now it several. Happens when I’m rolling slow and push the clutch pedal in. Really sounds like it’s coming from the transmission/clutch.
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Axles? CSB is backwards? Diff is loose? My diff was backing the bolts out all the time and then I realized the CSB was backwards.
https://www.instagram.com/_jdesigner_/ http://nevertoolow.tumblr.com/
🥳SOLD BMW E24 633CSI - BMW M30B32 🧪SOLD HCH ES9 - 1.3 LDA
👽BMW E30 325IC - Toyota 1JZ-GTE ⏰ HONDA EF9 CIVIC SI - JDM B18C5
☠️BMW E36 318i - Ford 5.0 FE302 🚴♂️ GT-Labomba - 26x2.75 Freeride
🤹♀️SOLD BMW E36/7 Z3 - BMW M54B25 🧓SOLD BMW E10 2002 - BMW M10M05 -
Axles? CSB is backwards? Diff is loose? My diff was backing the bolts out all the time and then I realized the CSB was backwards.
Sounds like it’s coming from the front, I’m going to assume it’s not axles.
It happens when I push clutch in while rolling slowly, so the only “jerky” movements happening to the car is the clutch. It’s not like I’m engaging the clutch and the car jerks where there could be noises generated from play in axles or something.
If that makes sense. That’s why I think it’s something with the clutch. Flywheel coming loose or something.
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Sounds like it’s coming from the front, I’m going to assume it’s not axles.
It happens when I push clutch in while rolling slowly, so the only “jerky” movements happening to the car is the clutch. It’s not like I’m engaging the clutch and the car jerks where there could be noises generated from play in axles or something.
If that makes sense. That’s why I think it’s something with the clutch. Flywheel coming loose or something.
Guess everyone’s dropping their transmissions this summer
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Guess everyone’s dropping their transmissions this summer
I just wanted to be like the cool kids.
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Has anyone done a removable core support on their e30? As I get ready to pull the engine for the 3rd time to check the clutch and to put in the rebuilt m20, a removable core support sounds awfully tempting.
I think @Sam_Holzmann has?
https://www.instagram.com/_jdesigner_/ http://nevertoolow.tumblr.com/
🥳SOLD BMW E24 633CSI - BMW M30B32 🧪SOLD HCH ES9 - 1.3 LDA
👽BMW E30 325IC - Toyota 1JZ-GTE ⏰ HONDA EF9 CIVIC SI - JDM B18C5
☠️BMW E36 318i - Ford 5.0 FE302 🚴♂️ GT-Labomba - 26x2.75 Freeride
🤹♀️SOLD BMW E36/7 Z3 - BMW M54B25 🧓SOLD BMW E10 2002 - BMW M10M05 -
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Well if any one can chime in with some pointers or if it's worth the work that would be greatly appreciated.
From what I could dig up it doesn't look like there's one way to do it and you kinda have to dive in, cut it out, and then figure it out from there.
blast from the past
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blast from the past
winner winner chicken dinner. Thank you! This doesn't seem too bad.
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Two suggestions
#1 Use rivnuts on the chassis side to bolt the core support back in with. It's handy as hell
#2 Make sure to slice things to you can remove your core support without needing to pull the fenders.
#2.5 Have a couple beers, slicing into your core support feels like it should be more calculated than it really is, and a little grinder operation lubricant never hurts.I used a new core support because mine was bent, so I had the luxury of truly destroying it.
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I was planning on using rivnuts. Seems much easier than welding nuts for bolts.
I would much rather cut it out without having to pull the fenders. I assume that if I am slicing it so it can ultimately be removed without needing to pull the fenders I shouldnt need to pull the fenders off to do the initial cuts?
I will make sure the mini fridge in the garage is stocked before I start cutting.
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