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Old May 22, 2024, 06:51 AM
  #6091  
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Originally Posted by kikiturbo
ha!
yeah you for sure called it but didn't know the method he described above would fix it
Old May 22, 2024, 03:10 PM
  #6092  
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Originally Posted by kyoo
yeah you for sure called it but didn't know the method he described above would fix it
In the service manual for the 6 spd it is mentioned that after assembly one should use some force and bang it into some gear to seat the circlip, and check afterwards trough that small hole in the casing. ... guess they forgot when rebuilding..

anyway,... great it is working good now!... getting the gearbox out is one of the worse jobs on the platform..
Old May 22, 2024, 04:09 PM
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Epic internet diag and fix lol
Old May 23, 2024, 01:38 PM
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Originally Posted by kikiturbo
In the service manual for the 6 spd it is mentioned that after assembly one should use some force and bang it into some gear to seat the circlip, and check afterwards trough that small hole in the casing. ... guess they forgot when rebuilding..

anyway,... great it is working good now!... getting the gearbox out is one of the worse jobs on the platform..
only question is, what caused the issue to begin with? trans was perfect when i had it built long ago, i dont think this is the sort of issue that develops over time right?

i mean i needed to get it built anyway given the synchros were worn to **** and one of the keys had fallen out, but just curious.
Old May 23, 2024, 04:35 PM
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Two separate issues.

You sent it in because it needed rebuilt.

Issues after rebuild was simply due to that snap ring not being seated.
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Old May 23, 2024, 05:04 PM
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Originally Posted by LetsGetThisDone
Two separate issues.

You sent it in because it needed rebuilt.

Issues after rebuild was simply due to that snap ring not being seated.
no no it was popping out of 2nd gear first, I think that's why I ended up jamming it, but yes separately it needed a rebuild anyway
Old May 27, 2024, 09:07 PM
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Would anybody happen to have a good drawing or scan of the evo dash? particularly the top bit. Looking to get one cut out of thin aluminium with laser cutter but need drawing with dimensions etc. Hoping somebody may have something before i have to do it manually
Old May 29, 2024, 08:16 AM
  #6098  
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Ok folks, weird question. Anyone have thoughts on Throttle Body plate angle, vertical vs horizontal.

My intent was the TB was to be mounted 90deg counter clockwise but the servo housing interfered with my fuel line. Normally it would be fine but the inlet is pushed out from the fuel pressure sensor.

I cant rotate it 90deg clockwise from here because the connector female end would face straight up.

What Im curious about, is will thick try to bias most air to enter towards the back and potentially causing less air in cyl-1.


Old May 29, 2024, 08:30 AM
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seems fine to me. pressure is "omnidirectional"
Old May 29, 2024, 08:37 AM
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Originally Posted by ViciousLSD
seems fine to me. pressure is "omnidirectional"
Static pressure might be, but not when flow is concerned. If that was the case, aerodynamics wouldn't work :P
Old May 29, 2024, 08:47 AM
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manifold pressure I mean
crud/oil/water may get into the throttle plate shaft bushing thingy.

Last edited by ViciousLSD; May 29, 2024 at 08:53 AM.
Old May 29, 2024, 09:24 AM
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Are you not able to rotate it another 90° clockwise from where it's at? Even with it the way shown, the flow will be different at partial throttle conditions but should be roughly the same at full throttle when it matters. i say send it.
Old May 29, 2024, 09:36 AM
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Originally Posted by griceiv
Are you not able to rotate it another 90° clockwise from where it's at? Even with it the way shown, the flow will be different at partial throttle conditions but should be roughly the same at full throttle when it matters. i say send it.
I can, but it would put the female part of connector facing straight up. Which bosch specifically says not to do for obvious reasons.

I might be able to fit it the normal way if I just change the ~15deg offset the other direction (CCW instead of CW) but would be convenient if it didnt matter and I could move on
Old May 29, 2024, 06:24 PM
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Check to see where the throttle blade is at WOT, if it's vertical then you should be fine. Part throttle has slower airflow so distribution typically isn't as bad, but yes that will change cylinder distribution like that, although IIRC cylinder 4 is the one that typically runs lean first so it may not be a bad thing.

Bosch's documentation for mounting angle is odd and a bit confusing but basically they just want there to not be a way to moisture to run down the harness and into the backside of the connector. If you don't want to machine a new adapter to get that slight downward angle then you could probably get away with having an adequate drip loop in the harness, basically just run the harness straight down.

If it were me I'd run it like you've got it and if you run into an odd tuning issue then consider throttle angle as a possible cause. No point in fixing something that may not even be an issue IMO.
Old May 29, 2024, 06:58 PM
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Dallas - I tried it both ways (vertical and horizontal) when I tuned my car with individual Lambda's on the stock exhaust manifold.
Made no difference!
68mm Bosch


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