Search found 95 matches
- Wed Mar 16, 2016 8:23 am
- Forum: ECU Tuning
- Topic: Tuning to avoid head lift
- Replies: 5
- Views: 2696
Re: Tuning to avoid head lift
I was using saturn studs. (although i did not install or tq them, but they seemed evenly tq'd when I removed them). I agree that I should not have been lifting my head at such low boost. (although this turbo does build 15psi before 3,000rpm.) I'm thinking that detonation that I could not hear must h...
- Wed Mar 16, 2016 7:25 am
- Forum: ECU Tuning
- Topic: Tuning to avoid head lift
- Replies: 5
- Views: 2696
Re: Tuning to avoid head lift
It wasn't overheating from timing retard. The headgasket was allowing leakage and the head was lifting at 15psi+. That timing map I posted was only tuned up to 220kpa, above that is retarded further in case of boost spikes. The numbers in the 220kpa break point were knock limited (audible with no he...
- Mon Mar 14, 2016 1:10 pm
- Forum: ECU Tuning
- Topic: Tuning to avoid head lift
- Replies: 5
- Views: 2696
Tuning to avoid head lift
I was recently fighting an intermittent overheating issue that turned out to be due to head lift and the head gasket showing signs of very small leaks, but in 9 places! Engine is (finally) back together with felpro and ARP 2000 head studs tq'ed to 75 ftlb. I am running 9.5:1 CR with an EFR 6758 @15p...
- Sun Jan 31, 2016 11:04 pm
- Forum: KA-T Tech. Basic
- Topic: Trouble pulling timing chain idler
- Replies: 11
- Views: 3454
Re: Trouble pulling timing chain idler
fixed, although its not all that interesting now. I just needed to grow a pair and hit it.
- Sun Jan 31, 2016 8:33 am
- Forum: KA-T Tech. Basic
- Topic: Trouble pulling timing chain idler
- Replies: 11
- Views: 3454
Re: Trouble pulling timing chain idler
against my better judgement, a few (relatively) soft blows with a hammer and a piece of wood knocked it off. Crazy how stuck it was!
- Fri Jan 29, 2016 8:09 pm
- Forum: KA-T Tech. Basic
- Topic: Trouble pulling timing chain idler
- Replies: 11
- Views: 3454
- Wed Jan 27, 2016 9:05 am
- Forum: KA-T Tech. Basic
- Topic: Trouble pulling timing chain idler
- Replies: 11
- Views: 3454
Re: Trouble pulling timing chain idler
Is it attached or located on the head in any way? Or can I safely smack it around a bit? Haha
- Wed Jan 27, 2016 5:04 am
- Forum: KA-T Tech. Basic
- Topic: Trouble pulling timing chain idler
- Replies: 11
- Views: 3454
Re: Trouble pulling timing chain idler
I took the bolt out, and the sproket slides on the shaft, but the shaft is stuck to the head. Because the shaft isn't moving, the chain runs into the lower guides if you try to slide the sproket off the shaft. (I'm pulling the head with the lower covr still on) A little background, the engine was bu...
- Tue Jan 26, 2016 6:58 pm
- Forum: KA-T Tech. Basic
- Topic: Trouble pulling timing chain idler
- Replies: 11
- Views: 3454
Re: Trouble pulling timing chain idler
Hmm, the silence is making me nervous haha. I really hope I'm just missing something stupid...
- Mon Jan 25, 2016 8:44 pm
- Forum: KA-T Tech. Basic
- Topic: Trouble pulling timing chain idler
- Replies: 11
- Views: 3454
Trouble pulling timing chain idler
Hey guys, I'm in the middle of doing a headgasket on a 96 ka24de. I've got the upper chain off, but the idler is being stopped from sliding off by the lower chain hitting the tensioner/guide??? Its like the idle gear is sliding, but only relative to its shaft (13016M in the picture below): http://ww...
- Thu Dec 24, 2015 9:34 am
- Forum: KA-T Tech. Basic
- Topic: overheating, only during high boost
- Replies: 19
- Views: 4602
Re: overheating, only during high boost
I upped the boost from 10 to 17psi when the over heating started, but was shooting for 400whp eventually. I had been running 10 psi for about 3yrs without issue.
pump gas.
pump gas.
- Tue Dec 22, 2015 4:21 pm
- Forum: KA-T Tech. Basic
- Topic: overheating, only during high boost
- Replies: 19
- Views: 4602
Re: overheating, only during high boost
It will if that turbo is too small on the exhaust side. My torque was in the 500's but I made 572TQ on the stock intake. I run a 1 a/r turbine housing tho. If you can build 10 psi just reving the motor the. That means you can spoil the turbo almost instantly. Not good for a 2.4L with a long stroke ...
- Tue Dec 22, 2015 7:46 am
- Forum: KA-T Tech. Basic
- Topic: overheating, only during high boost
- Replies: 19
- Views: 4602
Re: overheating, only during high boost
Do yourself a big favor and check the complete head thickness so you know how much the head has been shaved. Factory head height is 4.972-4.980. That way if you need to get a thicker head gasket to keep stock compression you will be good. Also, you will need to prep both surfaces to a mirror finish...
- Mon Dec 21, 2015 4:09 pm
- Forum: KA-T Tech. Basic
- Topic: overheating, only during high boost
- Replies: 19
- Views: 4602
Re: overheating, only during high boost
Here's that timing map i promised forever ago: https://drive.google.com/file/d/0B1cQUbxJk4N5dlJXazcyeDFpSmk0dF8xVnV6QmtwYnVtZnQ4/view?usp=sharing Comments? Also would love to here suggestions of preventing this in the future... Strongly considering a cometic or cosworth HG. Does the cosworth gasket ...
- Tue Dec 08, 2015 7:18 am
- Forum: KA-T Tech. Basic
- Topic: overheating, only during high boost
- Replies: 19
- Views: 4602
Re: overheating, only during high boost
Thanks adamky. I may take you up on those. I'm pretty sure it has ARP's, but I'll see which ones they are while I'm in there... Does the cosworth gasket require the same deck/head finishes that the cometic does? I think the head has already been decked and rather not push it. CR is already 9 or 9.5:...
- Mon Dec 07, 2015 4:44 pm
- Forum: KA-T Tech. Basic
- Topic: overheating, only during high boost
- Replies: 19
- Views: 4602
Re: overheating, only during high boost
I assume you meant "head: not ear haha. Crazy that he was getting lift even with ARP's. Cyl pressure should be a direct correlation with engine tq, so i guess you could sacrifice tq, to hit higher hp numbers, but that seems less than ideal. Any suggestion on how to improve the sealing capabilit...
- Mon Dec 07, 2015 8:22 am
- Forum: KA-T Tech. Basic
- Topic: overheating, only during high boost
- Replies: 19
- Views: 4602
Re: overheating, only during high boost
That's what I was afraid of. Unfortunately I didn't build it, but it supposedly has forged rods/pistons, ARP studs, felpro gasket.
- Sun Dec 06, 2015 9:05 am
- Forum: KA-T Tech. Basic
- Topic: overheating, only during high boost
- Replies: 19
- Views: 4602
overheating, only during high boost
Hi everyone, I've spent most of my time on this board in the megasquirt area, but... I'm having trouble overheating. Been trying to sort this out for months. Setup: Mishimoto radiator, clutch fan, modified shroud to fit IC piping, but I have driven with no shroud in the summer with out issue, ambien...
- Wed Sep 09, 2015 6:43 pm
- Forum: DIYAutoTune
- Topic: MS1 - hard/NO starts
- Replies: 107
- Views: 77529
Re: MS1 - hard/NO starts
just to bring this thread to a close - I switched to an AEM (using all the same sensors and wiring harness) and the problem is 100% gone. What a waste of 2yrs of my life
- Tue May 26, 2015 6:00 am
- Forum: DIYAutoTune
- Topic: Maxima COP Triggering
- Replies: 16
- Views: 16056
Re: Maxima COP Triggering
No ideas on the resets?
- Tue May 19, 2015 1:46 pm
- Forum: DIYAutoTune
- Topic: Maxima COP Triggering
- Replies: 16
- Views: 16056
Re: Maxima COP Triggering
Ah,I see where I was getting confused. Thanks. Any ideas why having my coils plugged in would cause resets that don't occur when I unplug them? I even powered/grounded the MS from a separate 12v source to try and eliminate possible noise or cranking voltage drop issues and I have the same problem......
- Sat May 16, 2015 8:13 pm
- Forum: DIYAutoTune
- Topic: Maxima COP Triggering
- Replies: 16
- Views: 16056
Re: Maxima COP Triggering
The MSPNP is set up so that "Going high" means it sends a 0 volt signal when off and 5 volts when dwelling the coil. Some circuits in the MS1/Extra manual use the opposite logic. Can you clarify this? I have read elsewhere that going high means that 0v charges the coil and then when the s...
- Wed May 13, 2015 11:12 am
- Forum: DIYAutoTune
- Topic: Maxima COP Triggering
- Replies: 16
- Views: 16056
Re: Maxima COP Triggering
Interesting, I am using this circuit: http://www.msextra.com/doc/ms1extra/MS_Extra_Ignition_Hardware_Manual.htm#5Vpull Which if i'm reading correctly "goes high" when dwelling the coils correct? Unless i did something horribly wrong. I bring this up because I am apparently doing something ...
- Fri May 08, 2015 7:03 am
- Forum: DIYAutoTune
- Topic: Maxima COP Triggering
- Replies: 16
- Views: 16056
Re: Maxima COP Triggering
So tried to start it up last night with the new COP's. When I turned the key to ON the coils got hot. I was using Spark Inverted = Yes as the how to suggested (link in previous post). I switched it to NO and the coils aren't getting hot, but the engine won't start. (Didn't try to start with inverted...
- Wed Apr 29, 2015 9:49 pm
- Forum: DIYAutoTune
- Topic: MS1 - hard/NO starts
- Replies: 107
- Views: 77529
Re: MS1 - hard/NO starts
woah - well apparently there are even more variations than I thought, this is straight out of the 96' FSM:
http://njsr.org/pics/displayimage.php?p ... fullsize=1
Matt - thanks for that analogy, clears up a lot.
http://njsr.org/pics/displayimage.php?p ... fullsize=1
Matt - thanks for that analogy, clears up a lot.
- Wed Apr 29, 2015 5:43 am
- Forum: ECU Tuning
- Topic: MS1/Extra Nerds! kPa Table Switching Circuit
- Replies: 2
- Views: 1908
Re: MS1/Extra Nerds! kPa Table Switching Circuit
Ran across this randomly - did you ever get it to work?
- Tue Apr 28, 2015 5:24 pm
- Forum: DIYAutoTune
- Topic: MS1 - hard/NO starts
- Replies: 107
- Views: 77529
Re: MS1 - hard/NO starts
Thanks, I didn't realize there was documentation like that for the PNP's... BUT, you're wrong - I have an S14 KA24DE - the injectors DO NOT receive power directly from the battery, it comes through the key as I said before and that's what is shown in the schematics I posted ;) Don't act like I haven...
- Mon Apr 27, 2015 5:04 pm
- Forum: DIYAutoTune
- Topic: MS1 - hard/NO starts
- Replies: 107
- Views: 77529
Re: MS1 - hard/NO starts
so, no suggestions huh? Can you at least tell me what the PnP MS uses for power?
- Wed Apr 22, 2015 10:46 am
- Forum: DIYAutoTune
- Topic: MS1 - hard/NO starts
- Replies: 107
- Views: 77529
Re: MS1 - hard/NO starts
Also, been reading through this: http://www.bgsoflex.com/megameet2008/megameet2008_gnding.pdf Which seems to be a great presentation, but is missing a lot of explanation. One of the things I wanted to clarify was: The pdf talks about a separate high current ground plane and a 5v/sensor ground plane....
- Tue Apr 21, 2015 7:57 am
- Forum: DIYAutoTune
- Topic: MS1 - hard/NO starts
- Replies: 107
- Views: 77529
Re: MS1 - hard/NO starts
Thanks! Although if you look at the first diagram I attached (edited OEM diagram) the injectors do not seem to be powered all the time, only when the key is in run/crank. Are there any other components that should have isolated power besides the coils? ie injectors or WB? - I plan to go back to runn...