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    • dwb
      dwb reacted to DSMPT's post in the thread 1G 86.5mm bore? with Like Like.
      How badly did you damage the cylinders? Sounds like it's 85.50mm instead of 86.50mm. And usually the increment is in .25mm (0.010"), so don't cut more than you need if it's not necessary, you are just wasting the margin for the future and making...
    • dwb
      dwb replied to the thread 1G 86.5mm bore?.
      No damage at all. Just high mileage. 270k Never been machined.
    • dwb
      This is a 6 bolt 4g63, never been machined, 270k miles, stockish rebuild. As I understand with bore sizes (please correct me if I'm wrong), it's 85mm from factory and usually increments in .5mm (0.02in) when machined. I've seen piston sizes up to...
    • dwb
      Remanufactured alts can do that. Take it out and get it tested. Hopefully it has a warranty.
    • dwb
      dwb replied to the thread Need to Vent.
      I can relate to a lot of what's going on here...including living in the best state in the nation (Colorado pioneer/native here) :p :shhh: All kidding aside, I'm glad this worked out for the OP. If that's an original CO car you shouldn't have to...
    • dwb
      No worries, all good :thumb: I think the point is you are thinking that the air goes to the CC because of ring sealing issue, and thinking no air (blow-by) would go to the CC after piston rings are seated. That's what I understood, sorry if I am...
    • dwb
      None taken. :D That's what we're here for, a discussion so we can all learn. I fully understand the difference between a BLT and a leak down test. I only ever did a leak down test once and it was on a high mileage engine so results were less than...
    • dwb
      I would break that engine in a bit more. Go run it with some varying loads on it. Get into boost if you can and make sure that the rings are seated. 50 miles isn't much. Put 300-500 on it and don't be afraid to drive her. I boosted my new engine...
    • dwb
      Let's backup a minute. OP is pressurizing the intake at the throttlebody. It's a fresh engine so we have to assume that everything in the head is within spec. Let's also assume PCV valve is not leaking. Therefore no air is escaping the intake...
    • dwb
      What about MHI or Garrett turbos? Pretty sure OP is running a stock T25No, not once. I typically BLT from the LICP anyway. I'm not disagreeing with you, just not fully wrapping my head around the idea with a stock turbo. I have a couple MHI...
    • dwb
      Is this opinion or fact? I think if this were true you would be blowing oil into your intake under vacuum conditions and then pressurizing your CC under boost. The turbo oil seals should prevent such a condition.Blow-by, intake valve stem...
    • dwb
      dwb replied to the thread 2G Primer on transmission?.
      It really comes down to personal preference. They were not painted from the factory. Just raw aluminum. Corrosion isn't much of a factor for the aluminum, but the steel hardware (shift levers, bolts, etc.) will rust in certain climates.
    • dwb
      Blow-by, valve seats, valve guides/seals, and PCV valve all can cause air to leak into the crankcase.I'd be curious what you get for leak down and compression test now after rebuild.
    • dwb
      This really is beginning to sound like an axle issue. Any chance you still have the original axles and can compare the sealing surface between the them?I've never personally done this but I've heard you can take the garter spring out of the...
    • dwb
      Have you noticed if it's leaking around the axle shaft or the case? I do see some minor scarring on the case in that last pic but I can't tell how deep the scars go.Is that a garter spring I see on the axle in your first pic? Is it missing from...
    • dwb
      dwb replied to the thread 2G Power steering pump overflows.
      I couldn't find an exploded view of a 2g pump so I'm demonstrating with a 1g (91-94). Assuming 1g and 2g pumps are roughly the same internally, I'd make sure all the parts highlighted below are present and installed properly. I've heard of reman...
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      • 1658762132995.png
    • dwb
      Can you push the fork into the slave cylinder by hand? If not, check your master cylinder rod position and make sure it isn't extended too far.
    • dwb
      dwb reacted to GSXRunner's post in the thread 2G MD184946 & MD305709 with Like Like.
      I had my breather blocked off. When I was testing, I heard a leak from it so I mistook-en it for a intake side vacuum line and plugged it up with a bolt (doh!), not realizing that I was effectively pressure testing my crankcase. I guess with all...
    • dwb
      dwb replied to the thread 2G MD184946 & MD305709.
      Ah, yes, I forgot about valve stem seals.
    • dwb
      dwb reacted to 1990TSIAWDTALON's post in the thread 2G MD184946 & MD305709 with Hell Yeah Hell Yeah.
      That missing plate was the culprit for the seal coming out. As for the pressure, Steve and I tried to express that. In my 40 some years of building motors, the pressure inside shouldn't be that great on a good/fresh motor. On these 4g motors, the...
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