4x4Wire TrailTalk

Timing Chain Slap?

Posted By: Buck

Timing Chain Slap? - 02/20/09 02:17 AM

I'm getting what sounds like timing chain slap, but only when the engine is cold, seems to go away when it warms up. Only have about 15000 miles on the rebuild. I recently did the oil pan gasket and refilled with 10W-40 and all was fine for a few weeks, could the heavier weight oil be causing the tensioner not to work properly until the oil is warmed up? I did the timing chain cover gasket about 1000 miles ago and everything looked good, no wear on the guides. <img src="/forums/images/graemlins/confused.gif" alt="" />
Posted By: suba

Re: Timing Chain Slap? - 02/20/09 02:27 AM

I suppose the heavier oil could take longer to warm up, letting the tensioner run a little slacker (from lower oil pressure on the tensioner) while the oil warms up. What weight oil did you run before, and what are the temperatures outside when your starting it?
Posted By: Buck

Re: Timing Chain Slap? - 02/20/09 05:18 AM

I was running 5 or 10W-30, don't recall, whatever is states in the manual to use. I went to the 10W-40 because while out wheeling, after being out for a few hours the oil pressure would seem to dip so I figured the heat was thinning things out, so I stepped up a grade. WA state, so 30's to 40's.
Posted By: suba

Re: Timing Chain Slap? - 02/20/09 07:28 PM

In the lower temps a 5W30 would definitely be thinner for starting and warmup, we run 5W30 in the winter in the subaru otherwise the lifters take a solid 5 minutes to quiet down. I wouldn't think you would actually be getting slap, there should still be enough pressure to keep tension on the chain, but it could be rattling against the tensioner a little bit, doubt it would hurt anything. I know that when I start mine up in the winter (running 10w30) it sounds like a diesel for the first 10 minutes of driving, but so far no problems.
Posted By: Buck

Re: Timing Chain Slap? - 02/21/09 01:23 AM

Don't know why it only happens at startup/cold engine, but, it's a broken drivers side timing chain guide. <img src="/forums/images/graemlins/angry.gif" alt="" />
Posted By: Vanishing_Point

Re: Timing Chain Slap? - 02/21/09 03:32 AM

Did you pull the valve cover and check?
Posted By: Buck

Re: Timing Chain Slap? - 02/21/09 03:40 AM

Yep, pulled the valve cover and could see the broken pieces of guide down at the bottom. Gonna order the steel backed ones, but dang, $80 bucks for a set, but only $20 for the double timing chain ones, don't get that.
Posted By: Buck

Re: Timing Chain Slap? - 02/21/09 04:37 AM

Okay, I can get a double row up to 84 or a single row from 85 on up, but no single row for a 84, what gives? Anyone know if I can use a 85 on up single row for a 84?
Posted By: Billydkid

Re: Timing Chain Slap? - 02/21/09 03:45 PM

Also what oil filter are you using? Make sure the filter you are using has the anti-drain back inside it. Some filters have it, some don't.
Posted By: engnbldr

Re: Timing Chain Slap? - 02/21/09 04:09 PM

Quote
Yep, pulled the valve cover and could see the broken pieces of guide down at the bottom. Gonna order the steel backed ones, but dang, $80 bucks for a set, but only $20 for the double timing chain ones, don't get that.


>>>*Suppose you were to buy a normal 1984 98 link timing set, then dual roller guides set for the early 20R and 81-82 22R and just put them on the 1984? Sure, they are wider but they do fit under the cover.

Then use the rest of the single roller kit? It all fits and works fine, just nobody makes the whole kit that way because about 90% of buyers send them right back as incorrect when they see the narrow single roller chain and the wide dual roller guides set.

But it all fits and works, that way there is no need to run around hunting down a short early drive spline.

Of course you could just buy the $20 set of guiderails and trim the outside edge of them narrower if you wanted them narrower for some reason.

*Or pay someone the extra $60 to trim them for you, that is the only difference on the 1984.

....*EB
Posted By: Billydkid

Re: Timing Chain Slap? - 02/21/09 07:06 PM

Engnbldr is the only one I buy timing chain sets <img src="/forums/images/graemlins/kewl.gif" alt="" /> from anymore. I've never had a problem with his stuff unlike other brands out there that wore out in less than a year.
Posted By: Buck

Re: Timing Chain Slap? - 02/22/09 01:23 AM

(cough) bought my rebuild kit from EB (cough) 3 years ago or so. It's just that stupid plastic guide issue, only had about 15000 miles on it though, (shrug), that's what ticks me off. Just got through with a clutch job and this pops up. <img src="/forums/images/graemlins/angry.gif" alt="" /> It's just a bad design from Toyota, they should of used metal backed ones to begin with.
Posted By: Billydkid

Re: Timing Chain Slap? - 02/22/09 01:25 AM

The one's I got from EB were metal backed, but I just bought the timing kit, not the whole rebuild.
Posted By: Buck

Re: Timing Chain Slap? - 03/01/09 07:06 PM

Finished up the guide replacement last night. EB dosn't have the guides for the 83/84, but he told me to watch out for companies passing off the shorter ones as the ones that fit. I found the correct metal backed guides from partsdinosaur.com, great service and quality parts. The whole timing chain kit was only $44.00, with Japanese made parts. I replaced the tensioner with the one in the kit, the one I had when I pulled it off was very hard to compress, as well as stuck in some spots, so that may have been part of the problem. Truck runs great again, here's a pic of the old guide, much of it was in the oil pan.

[Linked Image]
Posted By: huskyohilux

Re: Timing Chain Slap? - 03/01/09 07:49 PM

Just a little heads up, when the chain guides have broken the chain sometimes makes grooves in the timing chain cover.
Be observant on the oil so no water makes it through the grooves.
Posted By: Buck

Re: Timing Chain Slap? - 03/04/09 03:19 AM

I love my truck...I HATE my truck <img src="/forums/images/graemlins/angry.gif" alt="" /> Got home today, drove the truck to and from work and ran Awesome. Popped the hood just to make sure all was good and saw a oil leak down the front, figured crap, leaky gasket or something. The something is the timing chain cover is cracked where the bolt from the head bolts to the top of the timing chain cover, so now for the third time in as many months I'll need to tear it all down, after shelling out $150 for a new timing chain cover. If I had a cliff nearby I'd be tempted to roll the truck over it. <img src="/forums/images/graemlins/evil.gif" alt="" /> Thanks for listening to my rant, needed to blow off some steam, good part is I'm practically a pro at taking off the timing chain cover.
Posted By: kewlynx

Re: Timing Chain Slap? - 03/04/09 04:25 AM

Dang Buck---- fwiw, the torque on that top bolt is only something like 27 in-lbs- check the book.

$55+UPS shipping

fleabay linky
Posted By: Buck

Re: Timing Chain Slap? - 03/04/09 03:27 PM

I'll check the FSM, my book just says all 8mm bolts are 9 ft lbs., and all the 10mm are 29 ft. lbs., worked fine the 3 previous times I had this thing off. I'd like to pay that much for the cover, but I don't want some cheap Chinese knockoff that dosn't fit right, I'll do some more checking around before I pick one up.
Posted By: kewlynx

Re: Timing Chain Slap? - 03/05/09 03:45 AM

Yeah, the early covers are gettin' harder to find these days. Ya might check car-part.com for 82-84 Celicas too. <img src="/forums/images/graemlins/wink.gif" alt="" />
Posted By: Buck

Re: Timing Chain Slap? - 03/05/09 06:00 AM

Just checked the FSM, it says 9 ft. lbs. as well for that bolt, which is what I torqued it to. Anyone ever used Japan engines inc. to get parts off of ebay? They have one for $74.00, they have good feedback and are out of San Francisco, maybe I'll give them a shot.
Posted By: toyomorph

Re: Timing Chain Slap? - 03/16/09 02:00 AM

theres some a little cheaper on ebay
83-84 front cover
Posted By: toyrunner

Re: Timing Chain Slap? - 03/16/09 03:52 AM

Quote
The something is the timing chain cover is cracked where the bolt from the head bolts to the top of the timing chain cover,

When the oil goes down that hole and you put a bolt into it without first cleaning it, the oil will hydraulically create a hole in the timing cover at the end of said hole.
I was tightening a bolt in this exact situation and I heard a "pop" and saw a piece of the timing cover bounce off the floor. I picked it up and was like <img src="/forums/images/graemlins/angry.gif" alt="" />
Posted By: Stevie

Re: Timing Chain Slap? - 03/16/09 04:04 PM

WOW....good advice my friend. Thanks.
Posted By: Buck

Re: Timing Chain Slap? - 03/17/09 04:10 AM

had cleaned everything out as well as blown out the bolt holes with compressed air prior to assembly. Ordered the new one off of ebay tonight, $75 with shipping, hopefully I can get it all torn down and back together this weekend. Gonna miss the club snow run though. <img src="/forums/images/graemlins/frown.gif" alt="" />
Posted By: toyrunner

Re: Timing Chain Slap? - 03/17/09 03:51 PM

Quote
had cleaned everything out as well as blown out the bolt holes with compressed air prior to assembly. Ordered the new one off of ebay tonight, $75 with shipping, hopefully I can get it all torn down and back together this weekend. Gonna miss the club snow run though. <img src="/forums/images/graemlins/frown.gif" alt="" />

Then you somehow most likely could have re-inserted the wrong length bolt?
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