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Location:
Brisbane
Registered:
May 2002
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Weird 2JZ problem!
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Tue, 30 August 2005 01:41
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OK, this is a weird one. A bit of background: I'm helping a guy get his GA70 Supra running with an Aristo 2JZ-GTE engine + auto. The mechanical work was done by a Dodgy Bros workshop who charged him twice the original quote but basically gave up when they got to the wiring, and tried to charge him another few grand for a Microtech install (keeping in mind the engine is 100% stock). So I offer to wire it up using the original ECU etc, and after a bit of screwing around it starts and runs.
So, the first time it fires I notice there is a god-awful noise coming out of the inlet even at idle. I conclude broken turbos, and tell the owner to pull the off for a visual inspection. He gets half way through pulling the crap off to get at the turbos (anyone who's seen a 2JZ will know what a nightmare this is) and finds a pair of socks jammed against the compressor wheels. No I'm not kidding. Turbos appear to be fine so he puts it back together.
Last weekend I went over for the maiden voyage. The engine starts, bad noises are gone, but at any engine speed above idle there's turbo spooling noises and mega whooshing through the pod filter, followed by fulli-sik compressor surge noises when the throttle shuts. I thought that was stange so I hooked up a boost gauge directly to the plenum. Holding the throttle open at approx 3k rpm, there is 0.5 bar in the plenum! WTF?! How can there be any boost when the engine is free-revving at a constant speed?
Anyway, we decide to go for a drive around the block to see what happens. The engine runs smoothly, nothing weird happens - but when you floor it there's lots of whooshing but not much acceleration. It feels positively slow when it should be fairly quick. I didn't have the boost gauge hooked up at this point though so I don't know if there was any boost under load.
So, how on earth can this happen? After much thought I've concluded it must be (a) mega blockage in the exhaust (more socks?) or (b) seriously munted cam timing, most likely caused when the Dodgy Bros changed the timing belt. But if anyone has more suggestions I'm all ears. What's happening right now isn't possible as far as I'm aware, and yet it is happening! 
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| | Subject | Poster | Date |
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Weird 2JZ problem!
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Norbie | Tue, 30 August 2005 01:41 |
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Re: Weird 2JZ problem!
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MR 1JZ | Tue, 30 August 2005 01:50 |
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Re: Weird 2JZ problem!
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Skip | Tue, 30 August 2005 02:20 |
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Re: Weird 2JZ problem!
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MR 1JZ | Tue, 30 August 2005 02:26 |
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Re: Weird 2JZ problem!
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CrUZsida | Tue, 30 August 2005 02:28 |
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Re: Weird 2JZ problem!
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MR 1JZ | Tue, 30 August 2005 02:29 |
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Re: Weird 2JZ problem!
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4ageeza | Tue, 30 August 2005 04:16 |
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Re: Weird 2JZ problem!
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CrUZsida | Tue, 30 August 2005 02:27 |
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Re: Weird 2JZ problem!
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Norbie | Tue, 30 August 2005 02:36 |
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Re: Weird 2JZ problem!
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CrUZsida | Tue, 30 August 2005 02:39 |
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Re: Weird 2JZ problem!
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mrshin | Tue, 30 August 2005 02:57 |
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Re: Weird 2JZ problem!
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draven | Tue, 30 August 2005 02:58 |
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Re: Weird 2JZ problem!
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Norbie | Tue, 30 August 2005 03:29 |
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Re: Weird 2JZ problem!
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draven | Tue, 30 August 2005 04:52 |
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Re: Weird 2JZ problem!
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gianttomato | Tue, 30 August 2005 04:58 |
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Re: Weird 2JZ problem!
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Norbie | Tue, 30 August 2005 05:11 |
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Re: Weird 2JZ problem!
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gianttomato | Tue, 30 August 2005 05:27 |
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Re: Weird 2JZ problem!
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THE WITZL | Tue, 30 August 2005 05:46 |
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Re: Weird 2JZ problem!
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Norbie | Tue, 30 August 2005 05:50 |
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Re: Weird 2JZ problem!
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dingaling | Tue, 30 August 2005 06:02 |
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Re: Weird 2JZ problem!
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gianttomato | Tue, 30 August 2005 06:06 |
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Re: Weird 2JZ problem!
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Merudo | Tue, 30 August 2005 06:06 |
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Re: Weird 2JZ problem!
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Skip | Tue, 30 August 2005 07:39 |
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Re: Weird 2JZ problem!
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gianttomato | Tue, 30 August 2005 07:43 |
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Re: Weird 2JZ problem!
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Skip | Wed, 31 August 2005 00:00 |
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Re: Weird 2JZ problem!
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VeeP | Wed, 31 August 2005 02:35 |
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Re: Weird 2JZ problem!
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Norbie | Wed, 31 August 2005 03:18 |
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Re: Weird 2JZ problem!
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Skip | Wed, 31 August 2005 07:06 |
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Re: Weird 2JZ problem!
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Norbie | Wed, 31 August 2005 08:07 |
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Re: Weird 2JZ problem!
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Norbie | Mon, 05 September 2005 01:19 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Mon, 05 September 2005 11:01 |
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Re: Weird 2JZ problem!
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Dr_Love | Sun, 11 September 2005 22:38 |
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Re: Weird 2JZ problem!
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THE WITZL | Tue, 06 September 2005 05:33 |
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Re: Weird 2JZ problem!
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draven | Tue, 06 September 2005 05:37 |
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Re: Weird 2JZ problem!
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MR 1JZ | Tue, 06 September 2005 05:41 |
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Re: Weird 2JZ problem!
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clubagreenie | Tue, 06 September 2005 06:45 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Fri, 09 September 2005 14:13 |
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Re: Weird 2JZ problem!
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CrUZsida | Fri, 09 September 2005 14:16 |
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Re: Weird 2JZ problem!
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THE WITZL | Fri, 09 September 2005 18:30 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Sat, 10 September 2005 13:09 |
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Re: Weird 2JZ problem!
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draven | Sat, 10 September 2005 13:48 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Sat, 10 September 2005 13:50 |
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Re: Weird 2JZ problem!
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THE WITZL | Sat, 10 September 2005 14:06 |
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Re: Weird 2JZ problem!
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CrUZsida | Sun, 11 September 2005 01:42 |
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Re: Weird 2JZ problem!
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Norbie | Sun, 11 September 2005 06:03 |
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Re: Weird 2JZ problem!
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draven | Sun, 11 September 2005 07:30 |
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Re: Weird 2JZ problem!
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Norbie | Sun, 11 September 2005 22:51 |
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Re: Weird 2JZ problem!
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Dr_Love | Tue, 13 September 2005 02:23 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Mon, 12 September 2005 01:09 |
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Re: Weird 2JZ problem!
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draven | Mon, 12 September 2005 01:40 |
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Re: Weird 2JZ problem!
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Manny | Mon, 12 September 2005 04:59 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Mon, 12 September 2005 05:11 |
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Re: Weird 2JZ problem!
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Manny | Mon, 12 September 2005 05:25 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Mon, 12 September 2005 05:42 |
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Re: Weird 2JZ problem!
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Norbie | Tue, 13 September 2005 02:52 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Tue, 13 September 2005 07:24 |
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Re: Weird 2JZ problem!
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CrUZsida | Sun, 18 September 2005 09:11 |
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Re: Weird 2JZ problem!
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CrUZsida | Tue, 20 September 2005 02:19 |
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Re: Weird 2JZ problem!
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CrUZsida | Mon, 31 October 2005 13:03 |
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Re: Weird 2JZ problem!
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Norbie | Sun, 18 September 2005 09:24 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Tue, 20 September 2005 01:58 |
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Re: Weird 2JZ problem!
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justcallmefrank | Tue, 20 September 2005 02:12 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Tue, 20 September 2005 02:06 |
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Re: Weird 2JZ problem!
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Norbie | Tue, 20 September 2005 03:33 |
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Re: Weird 2JZ problem!
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CrUZsida | Tue, 20 September 2005 03:38 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Tue, 20 September 2005 11:58 |
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Re: Weird 2JZ problem!
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CrUZsida | Tue, 20 September 2005 12:42 |
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Re: Weird 2JZ problem!
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CrUZsida | Fri, 07 October 2005 07:08 |
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Re: Weird 2JZ problem!
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Dr_Love | Mon, 10 October 2005 05:41 |
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Re: Weird 2JZ problem!
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CrUZsida | Mon, 10 October 2005 05:53 |
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Re: Weird 2JZ problem!
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Dr_Love | Tue, 11 October 2005 02:30 |
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Re: Weird 2JZ problem!
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Norbie | Tue, 11 October 2005 00:53 |
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Re: Weird 2JZ problem!
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CrUZsida | Tue, 11 October 2005 02:54 |
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Re: Weird 2JZ problem!
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Dr_Love | Fri, 14 October 2005 07:33 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Fri, 14 October 2005 13:11 |
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Re: Weird 2JZ problem!
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Manny | Fri, 14 October 2005 13:46 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Fri, 14 October 2005 23:11 |
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Re: Weird 2JZ problem!
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Manny | Fri, 14 October 2005 23:31 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Mon, 31 October 2005 12:59 |
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Re: Weird 2JZ problem!
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Sir_2JZA70 | Mon, 31 October 2005 13:48 |
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Re: Weird 2JZ problem!
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Skip | Tue, 01 November 2005 00:43 |
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Re: Weird 2JZ problem!
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CrUZsida | Mon, 31 October 2005 13:54 |
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Re: Weird 2JZ problem!
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Manny | Tue, 01 November 2005 00:03 |
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Re: Weird 2JZ problem!
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Dr_Love | Tue, 08 November 2005 06:16 |
