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Location:
sunny coast, qld
Registered:
October 2002
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Location:
Brisbane
Registered:
October 2002
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Re: 1jz problem
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Sat, 10 July 2004 07:38
 
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have u pulled the head off, may be a cracked piston skirt, thats what my dad said it could be, or maybe a problem with the gudgeon like u said.
how do u know its going at twice the speed of the engine
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Location:
Brisbane
Registered:
November 2002
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Re: 1jz problem
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Sat, 10 July 2004 07:39
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This may sound very basic, but had you considered a gasket leak?
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Location:
Perth
Registered:
October 2003
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Re: 1jz problem
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Sat, 10 July 2004 08:32
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If you had the dumps fitted id say it was a gasket leak too, can make a mean old tapping sound.
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Sun, 11 July 2004 03:24
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when the dump pipes were fitted he had to take the front turbo off but not the rear. We had the front turbo off and both exhausts and they have been refitted with new gasket cement so I don't think it could be that. I would be glad if it was though. We started it with the front turbo off to try and see if it was turbo related but as you can imagine it was just too loud to hear any tapping noise then.
Phil: we didn't take the head off as we had a hunch that it was something to do with the timing belt tensioner so we put it back together to test it but no luck there 
Would I be right in assuming that if it was a cracked piston skirt or loose gudgeon pin, it would still show up with good compression and leak down results or not?
I am not sure that it is exactly twice a rev but it just sounds quicker than 1 per rev.
thanks
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Mon, 12 July 2004 02:30
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this is a reply I got from someone on supraforums. I am going to be trying it after I recheck the exhaust manifolds. I still don't understand how that could make a tapping noise though???
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man you are not going to believe this shit but we had the same noise on JWcattos car. We checked exactly everything that you did with no solution. We decided to drive the car a little just to see if what would happen if we put some load on the engine. Before driving though I told Justin we need to check the water/antifreeze. It was a little low so we started the car up and started adding water. As I was filling the radiator the noise got more and more quiet until it was gone- @#%&^%@&$%????? I know it was't any of the accseciores because we ran the car with the belt off as we where trying to find the noise in the first place. I told the rest of my buddies and they couldn't believe it-That's why I didn't post it on here. Now since then (4months ago) one of our Lexus's with a built turbo N/A made the same noise when we first started the car after a rebuild. We ran it until the temp came up and filled the radiator the rest of the way and the noise disappeared-This was one of the previous misbelieving buddies LOL! Now this might not be your problem but I figured that someday someone else would have this noise. (the noise on both of our cars was coming from the front cam cap(seal cap) on the intake side and it sounded metal to metal-we both use 10w30) Good Luck!
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Location:
Adelaide, SA
Registered:
May 2002
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Re: 1jz problem
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Mon, 12 July 2004 03:49
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That sure is an interesting post... I find it really hard to believe though.
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Mon, 12 July 2004 04:20
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me too but any suggestions that come my way, I will be trying!
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Location:
Adelaide, SA
Registered:
May 2002
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Re: 1jz problem
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Mon, 12 July 2004 04:27
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Same 
*walks out to his car and checks the coolant*
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Tue, 13 July 2004 13:38
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*update*
I just checked for exhaust leaks tonight and there seems to be a VERY small leak on the rear turbo to dump pipe but haven't found any others. I really don't think this is making the noise though. I will be making some gaskets and fixing them all up though.
Did the coolant thing filled it up to the top and still the noise continues.
Got the screwdrivers and pipes out listening again and to me it sounds like it is somewhere around the 3rd or 4th injector. Is there any way that this could make a noise only when there is compression in this area?
it sounds louder near the injectors than it does with the screwdriver near the coil packs. I am listening for the knock noise in rhythm not just the injectors opening as well. you can hear the difference.
any more help please?
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Location:
Brisbane
Registered:
February 2003
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Re: 1jz problem
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Tue, 13 July 2004 13:46
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does 1Jz hav tvis? if so, maybe the butterflys are doing weird shit?
dunno - just that you say near the injectors... (i know it's a longshot - but it's late ok?)
tho lets not forget that someone else here (names eludes me at moment) had engine sounds we all thought were head-related - but were infact totally shagged big-end bearing.  
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Tue, 13 July 2004 14:29
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I used Gianttomato's test with the wood to feel for any movement in the piston on all 6 cylinders and none of them moved at all. So to me that rules out big ends, little ends and gudgeon pins right?
We also pulled the big end bearings off cylinder 1 and 2 and they were in good condition.
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Tue, 13 July 2004 14:30
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what is TVIS? I can just look at the butterflys next time I start it as no intercooler piping is connected at the moment.
later
Chris
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Location:
Brisbane
Registered:
November 2002
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Re: 1jz problem
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Tue, 13 July 2004 14:34
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And I'm installing a 1JZ into my car WHY?
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Tue, 13 July 2004 15:21
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| 7M-Brisbane wrote on Wed, 14 July 2004 00:34 |
And I'm installing a 1JZ into my car WHY?
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this is just a freak accident! that is what I have to keep telling myself anyway 
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Wed, 14 July 2004 02:35
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had another suggestion that it could be ring lands? this may explain why it only taps when the engine is started and the differing compression test results.
what do you think?
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Location:
Brisbane
Registered:
October 2002
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Re: 1jz problem
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Wed, 14 July 2004 10:27
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very bad idea to test the screw driver near the coils, imagine if 40,000 volts went up thru it and in your ear, bye bye chris
what are the compressions
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Wed, 14 July 2004 11:48
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I am not sure how many times you are supposed to crank it over to test it so we just did 3 cranks on each to make sure they are all the same.
1-145
2-140
3-145
4-150
5-145
6-150
I am thinking BHG again between cylinders but will check for moisture tomorrow morning.
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Location:
Perth
Registered:
October 2003
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Re: 1jz problem
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Wed, 14 July 2004 23:34
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| Mr DOHC wrote on Wed, 14 July 2004 18:27 |
very bad idea to test the screw driver near the coils, imagine if 40,000 volts went up thru it and in your ear, bye bye chris
what are the compressions
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Coil voltage wont kill you. Its only low current AFAIK. Just about everyone equipped with a car with a distributor has felt this 40000 V go through them while adjusting the base timing by turning the distributor . Itll give you a kick and make you feel pretty wired afterwards but thats it. I found its actually a worse at idle than say 2500 RPM.
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Thu, 15 July 2004 00:17
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looks like the time has finally come to pull the head off and have a search
how can this happen? It is not a 7m!
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Location:
Brisbane
Registered:
July 2002
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Re: 1jz problem
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Thu, 15 July 2004 00:34
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| Chris Davey wrote on Thu, 15 July 2004 10:17 |
looks like the time has finally come to pull the head off and have a search
how can this happen? It is not a 7m!
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the oil you using is alot difference to most people..
5/30..
i think mines running 10/40 or 10/50.. though im not sure... dunno if that would have anything to do with anything.
i say u pull the whole engine bare and rebuilt it lol
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Thu, 15 July 2004 00:43
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| Jag7799 wrote on Thu, 15 July 2004 10:34 |
| Chris Davey wrote on Thu, 15 July 2004 10:17 |
looks like the time has finally come to pull the head off and have a search
how can this happen? It is not a 7m!
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the oil you using is alot difference to most people..
5/30..
i think mines running 10/40 or 10/50.. though im not sure... dunno if that would have anything to do with anything.
i say u pull the whole engine bare and rebuilt it lol
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I was using 10w30 when it happened. That is what is recommended for 1jz's by Toyota and there was heaps of oil pressure?
I have asked about rebuilding before but nobody seems to have done it as it is a lot more expensive than just buying another second hand motor.
Will have to make the decision when I actually SEE the problem.
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Location:
Brisbane
Registered:
July 2002
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Re: 1jz problem
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Thu, 15 July 2004 00:47
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| Chris Davey wrote on Thu, 15 July 2004 10:43 |
| Jag7799 wrote on Thu, 15 July 2004 10:34 |
| Chris Davey wrote on Thu, 15 July 2004 10:17 |
looks like the time has finally come to pull the head off and have a search
how can this happen? It is not a 7m!
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the oil you using is alot difference to most people..
5/30..
i think mines running 10/40 or 10/50.. though im not sure... dunno if that would have anything to do with anything.
i say u pull the whole engine bare and rebuilt it lol
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I was using 10w30 when it happened. That is what is recommended for 1jz's by Toyota and there was heaps of oil pressure?
I have asked about rebuilding before but nobody seems to have done it as it is a lot more expensive than just buying another second hand motor.
Will have to make the decision when I actually SEE the problem.
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i say you just spend 1 day pulling the whole engine apart.. put it together 1 part at a time till u see the problem.. and then u can see/rectify any other faults too
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Location:
Perth
Registered:
October 2003
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Re: 1jz problem
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Thu, 15 July 2004 01:38
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Meh, id just keep driving it till it dies, then rebuild it, or get a replacement.
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Thu, 15 July 2004 01:42
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but if I can find out what is wrong with it I may be able to buy the part of Bentt who is wrecking a 1j at the moment and save the expense of buying a whole new engine as well as swapping it in and fitting my custom bits to it.
Johal: I can tell you that it would take me a lot longer than a day to pull it all apart! I am a newbie to this remember!
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Location:
Brisbane
Registered:
July 2002
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Re: 1jz problem
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Thu, 15 July 2004 11:20
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ahh well.. good way to learn
not that i ever want to HAVE to learn lol
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Location:
Brisbane
Registered:
February 2003
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Re: 1jz problem
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Thu, 15 July 2004 11:25
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| Chris Davey wrote on Thu, 15 July 2004 11:42 |
Johal: I can tell you that it would take me a lot longer than a day to pull it all apart! I am a newbie to this remember!
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nah... just keep unbolting stuff til there's nothing left to undo... worked for my 18R when i didn't have a manual 
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Location:
sydney
Registered:
November 2004
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Re: 1jz problem
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Sun, 21 November 2004 14:07
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boost controller makes a loud ticking noise by the way..happened to me after apexi avcr install.was just the sloenoid.
btw what happened with your engine Chris?
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz problem
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Sun, 21 November 2004 23:21
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was definitely too loud to be called a ticking noise.
In the end I bought a 2nd hand engine and have put that in. But the turbos were on their way out also, so I am going single turbo along with 550cc injectors, FMIC, wolf 3d and 4" exhaust. Still not going though
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