94 EX F22/F23 timing belt - revisited
#21
The seals we are talking about are all visible when you have the timing covers off. Camshaft, 2 balance shafts, & crankshaft. You can look for oil leaking down from each of these. You might need a mirror or something to get a good view. Granted, by that time you don't want to have to stop working, run out to buy seals, or wait for them to ship... So that's a decision for you to think about.
I just keep having back problems in addition to every other postponement that's dragging this out FOREVER... :-P Wont start this weekend either at this rate. Might sit until another spring if everything continues this way.
One thing is the oil pan. But if I remember right, the lower timing cover comes up against the oil pump in a way that the oil pan gasket would leak outside of the timing cover, and the crank seal would leak inside of the timing cover. I think there's a little hole or something right at the bottom for oil to leak out from the bottom of the timing cover.
Of course i'm aware there are other things that can 'suddenly' fail over 200k causing the same outcome, including the oil pump itself which i'd rather not touch, so maybe i'll just do the belt and ignore the seals if they're intact. I'll try to post pictures when I have the timing cover off for opinions on the matter - my eyes are not as practiced as most other peoples and whats obvious to you might not be to me.
#22
A seal that's worn can seep oil very slowly, probably less oil than your pan gasket. If the seal should pop out of place, that will dump a lot of oil out in a very short time - and that's what the retainers are all about.
Seals are pretty cheap compared to the size of the job just getting to them. You can buy them then decide whether to install them. If you install them, you have to be careful getting the pulleys off the shafts. But mostly the risk of scratching the surface they seal against when you dig the old seal out of it's place.
Seals are pretty cheap compared to the size of the job just getting to them. You can buy them then decide whether to install them. If you install them, you have to be careful getting the pulleys off the shafts. But mostly the risk of scratching the surface they seal against when you dig the old seal out of it's place.
#23
I'm one of those people who don't fix it unless it's broken types. However Timing belts on a Honda are the 1 thing I'll do before the belt breaks. This is because the engine is an interference engine. Meaning IF the belt breaks, you're looking at bending valves, and possibly breaking pistons. Can you say expensive?? Seals and other stuff are minor compared to that. It really depends on how bad the leak is before you decide to replace the seals. How much oil were you feeding it before you "parked" it?
The AT in the 6th gen Honda (98-02) are known to go, but nobody knows when (as compared to the GM 4L60E that goes at 140K BTDT had it rebuilt). The highest mileage 6th gen trans that I know of was a 4 cylinder version, that went 414K miles with regular 3X3 quart oil changes using DW1 every 30K. It was sold still working like new according to it's former owner. Everyone else has gone anywhere from 130K to 300K miles.
The longest I've heard of a 6th gen V6 AT going is 364Kkms (don't know what that converts to). He drives it every day 80kms each way to work, and is working 6 days a week. When it let go, it started slipping, then got worse, until he finally couldn't stand it anymore and replaced it with a used one that he harvested out of a 300 dollar (CDN) parts car he bought, and is still using that car today (it's his daily beater). His major concern is RUST, as he feels that will take it off the road (gets inspected every year for road worthiness).
The AT in the 6th gen Honda (98-02) are known to go, but nobody knows when (as compared to the GM 4L60E that goes at 140K BTDT had it rebuilt). The highest mileage 6th gen trans that I know of was a 4 cylinder version, that went 414K miles with regular 3X3 quart oil changes using DW1 every 30K. It was sold still working like new according to it's former owner. Everyone else has gone anywhere from 130K to 300K miles.
The longest I've heard of a 6th gen V6 AT going is 364Kkms (don't know what that converts to). He drives it every day 80kms each way to work, and is working 6 days a week. When it let go, it started slipping, then got worse, until he finally couldn't stand it anymore and replaced it with a used one that he harvested out of a 300 dollar (CDN) parts car he bought, and is still using that car today (it's his daily beater). His major concern is RUST, as he feels that will take it off the road (gets inspected every year for road worthiness).
#24
A seal that's worn can seep oil very slowly, probably less oil than your pan gasket. If the seal should pop out of place, that will dump a lot of oil out in a very short time - and that's what the retainers are all about.
But mostly the risk of scratching the surface they seal against when you dig the old seal out of it's place.
But mostly the risk of scratching the surface they seal against when you dig the old seal out of it's place.
For what it's worth rapidly cooling weather (the original predictions for 35-40 all week just dumped subfreezing nonstop) plus back problems shifted this into a slow all winter project. :-P When I get to it i'll fire up the kero heater and try to disassemble things down to getting a picture under the timing cover. Then decide what to do about the oil seals - if they look slow leaking, fast leaking, or what.
I'm one of those people who don't fix it unless it's broken types. However Timing belts on a Honda are the 1 thing I'll do before the belt breaks. This is because the engine is an interference engine.
Seals and other stuff are minor compared to that. It really depends on how bad the leak is before you decide to replace the seals. How much oil were you feeding it before you "parked" it?
Seals and other stuff are minor compared to that. It really depends on how bad the leak is before you decide to replace the seals. How much oil were you feeding it before you "parked" it?
I'll post seal pictures whenever this winter I finally get the timing cover off. maybe before the end of nov, we'll see.
Also news to me that the GM 4L60's (L = longitudinal, north south, RWD or 4WD) were bad trannies? I was less sure about the 4T60's (transverse, FWD) but thought the north southers were solid for what they were, going 500,000 miles in taxi service and such generally.
#25
If you're comfortable with the leak from your oil pan, then just put in the seal-retainer. You're already aware of checking the oil dipstick regularly. The way for a seal to suddenly dump a lot of oil, is for the entire seal to pop out of place. That's exactly what the retainer is going to stop. Instead of relying on the tight fit of the seal, it's a little bracket that positively holds it in.
You already know about the timing belt itself, it's capable of suddenly losing teeth or something to allow the camshaft to go out of time. That doesn't have any warning lights, until the moment it happens & the pistons hit the valves.
You already know about the timing belt itself, it's capable of suddenly losing teeth or something to allow the camshaft to go out of time. That doesn't have any warning lights, until the moment it happens & the pistons hit the valves.
#26
So would a retainer prevent a massive oil dump long enough to hopefully catch it (by which I mean flash an idiot light, that my girlfriend realizes is bad in time and pulls over to call me so I can tow it home to check it out) or is it a "yep you bought an engine" event if it happens? If the chances are GOOD that a warning light or/and buzzer would have an average driver pull over in time to avoid Total Catastrophe i'll try to avoid doing the seals.
Well i've got a 1994 fifth gen lacking any trans suicide parts like the later ones so i'm hoping it will still last. As they say, transmission fluid "pink with no stink". If I get another 60-70k out of the car i'll be pretty happy. I did the brakes and CV shaft already on it, and if the timing belt/water pump fix works well it will owe me nothing. But i'd still like to use it a bit longer, it's a cute little car. And the only one I have that the AC works on right now.
Also news to me that the GM 4L60's (L = longitudinal, north south, RWD or 4WD) were bad trannies? I was less sure about the 4T60's (transverse, FWD) but thought the north southers were solid for what they were, going 500,000 miles in taxi service and such generally.
Well i've got a 1994 fifth gen lacking any trans suicide parts like the later ones so i'm hoping it will still last. As they say, transmission fluid "pink with no stink". If I get another 60-70k out of the car i'll be pretty happy. I did the brakes and CV shaft already on it, and if the timing belt/water pump fix works well it will owe me nothing. But i'd still like to use it a bit longer, it's a cute little car. And the only one I have that the AC works on right now.
Also news to me that the GM 4L60's (L = longitudinal, north south, RWD or 4WD) were bad trannies? I was less sure about the 4T60's (transverse, FWD) but thought the north southers were solid for what they were, going 500,000 miles in taxi service and such generally.
The 94 Accord AT's were solid, mostly due to less electronics in them. The added electronics of the 6th gen are what caused them to get a bad rep. The 5th gens (94-97) didn't have this problem.
I said the 4L60E (electronic) are the ones that'll go 140K before failure. The 4L60 is another name for the 700R4, which is based off the THM400 (uses some parts from them too). Check most of the GM sites, as that trans was used in S-10's, Blazers, Astro vans, and even in the light duty full size trucks and SUVs. My own went at about 140,500 miles, which was right on target for the norm. My wife's Safari van went at 139K, and has an early 4L60E in it. After about 2000, most of the heavier duty GM vehicles got the 4L80E trans, which is stronger, and doesn't suffer from the same issues as the 4L60E did. However, the key to getting mileage out of them is regular fluid and filter changes.
And Jim is correct, when a timing belt goes, it goes quickly and without warning.
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