Question about 1991 Nissan 300ZX

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I have nissan skyline replaced motor with rb25det it was rb20det

I have 1991 r32 nissan skyline replaced motor with rb25det it was rb20det it now wont rev past 3500 rpm under load but when its in park it will rev freely to 8000 rpm could you please help i dont know what else i can do i have replaced computer and air flow meter

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Posted on Jan 02, 2017

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SOURCE: wont rev over 3500 rpm

You should go buy a Haynes or Chilton manual to figure this out. Costs about $15. There could possibly more than one reason for this happening. Anything posted in response could only be speculation.

Posted on Oct 28, 2008

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400R_Rep
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SOURCE: nissan rb25det

sounds like coil pack, when your coils break down due to age the spark then jumps from the side of the coil to the alloy head, i would recomend taking the coils out and getting them tested to be 100%.

Posted on Jan 18, 2009

  • 534 Answers

SOURCE: clutch not primming in r32 skyline

You either have air in the system or a faulty master cylinder.

Check fluid is being delivered from the master cyl. by slackening off the hydraulic line connection at the master cylinder while depressing pedal.
Until fluid is able to be delivered from the master cyl. itself you have no hope of bleeding the rest of the system.

As with all hydraulic bleeding processes, only release the fluid line when the pedal is being pushed slowly down or held down against the return spring pressure of the clutch pressure plate - re-tighten it on the upward stroke of the pedal to stop it drawing air back into the system.

If you are confident that there is fluid delivery from the master cyl. move to the clutch slave cylinder.

Again only open the bleeder valve when the pedal is being pushed slowly down (i.e. the hydraulic system is pressurised).

(If you keep the master cylinder full of hydraulic fluid, sometimes gravity will cause the line to 'self bleed' if the bleed nipple is left slightly open for several minutes at the start of the bleed process).
When fluid appears, finish the slave cylinder air bleed in the normal way.

If you have the time to spare, I have often found that provided the master cylinder is kept full, leaving the system overnight will allow a lot of the air to leave the system (gravity helps).

Posted on Jun 04, 2009

  • 32 Answers

SOURCE: I need resurfacing specs for an rb25det flywheel please!!!!

Runout limit (on clutch disc mating surfaces) manual trans, 1.0mm, or 0.039 inch,

Posted on Aug 17, 2009

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I need resurfacing specs for an rb25det flywheel please!!!!


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