matguy

So, I lost one of the bolts for the MAF. It's slightly an odd bolt in that it has a centering collar extending about half way down the bolt. Anyone got a part number for that?

I also seem to have lost one of the intake manifold bolts, but I did find a part number for that: 90148-80026

I might find them when I've got better light, but I'm preparing for if I can't. I'm assuming they've been caught by the plastic under-tray, but who knows where if it bounced at all.

t2d2

iTrader: (8)

I would just take one of them to the hardware store and find a replacement, then keep looking for the original if it bugs you having a mismatch. I upgraded a few of the old MAF/TPS bolts that way that were showing their age.

Kris9884

iTrader: (7)

Definitely sounds like a salvage yard part, that would bug me knowing it was different unless I replaced all of them with the same bolts.

t2d2

iTrader: (8)

^ That could be a very long hunt, considering how few SCs there are in the NW and how few of them will have engine components still in place. If you want to go that route, better to put a request in with aliga.

Kris9884

iTrader: (7)

I didn't know they were so rare up there, I have several here but as you said, all the pars are thrown everywhere.

t2d2

iTrader: (8)

WA has a few more than OR, from what I've seen, but when you're lucky to find one in the entire state at any given time, you know it's going to be slim pickings for parts.

matguy

Well, that bolt doesn't appear to the unique to this one car. It's the same as the SC300 (going by the drawings in my shop manual that covers both.) It's probably fairly common across Lexus and Toyota cars/trucks/suv's that use that same MAF.

On the other hand, I see quite a few SC400 and 300's on my daily commute in to Seattle. Maybe I should start taking pictures and put up an "SC's in the wild" thread. Not like I'm doing anything else for the hour of stop&go driving... each way.

t2d2

iTrader: (8)

You might be in luck then. Seattle is the one area in the NW I see lots of SCs for sale, so there's bound to be a few wrecked ones...

I just checked what I've got and it turns out I replaced all the MAF bolts with nicer hex head ones. I forgot I had replaced them all, but I do remember that old, soft metal being pretty badly stripped by POs. Replace 'em all and you'll soon be like me, forgetting they aren't original.

matguy

Well, it's not like the MAF needs to be torqued down, it just needs to be held in place and loosely seal the cold(ish) air pipe. It's not like there's real pressure (or vacuum) that it has to seal. So I shouldn't be particularly worried about stripping the bolt as long as I use an appropriately sized socket on it and not pliers or vice grips. By that rationale I should be able to use just about any appropriately sized bolt, but it's quite possible there's a reason they used the collared bolt, possibly to keep people from over-tightening and breaking the plastic MAF housing.

I stopped at a local large hardware store and picked up a magnet on a stick this morning, hopefully I'll be able to find it by poking that around over the under-engine tray.

Kris9884

iTrader: (7)

Lol magnet on a stick, so simple yet one of thee best tools invented.

matguy

While I fully agree, didn't help during the 20 minutes of poking around last night. I might jack it up and pull the tray this weekend.