Jump to content
SAU Community

Gtr gauge issues


Recommended Posts

Hey guys can't find much in search...

I had my engine rebuilt for my 33gtr, and now my speedo reads exactly 1/2 kph and the revs are all sporadic? I've had someone look at it and came up with nothing. If the engine builder accidentally mixed up my gearbox with a stagea awd could the speed sender be the issue? I don't want to fork out a grand to have the same issue? Or could my cluster just be effed?

Link to comment
Share on other sites

This is such a random and bizarre problem that it will be very unlikely that you will get a solution across the internet. Nevertheless, a few points deserve to be addressed.

  1. What do you mean "speedo reads exactly 1/2 kph"? Do you mean, that it reads exactly 0.5 km/h, that it reads either 1 or 2 km/h or that it reads exactly half the speed that the car s actually doing?
  2. How and why would your engine builder "accidentally mixed up my gearbox with a stagea awd"? Is there more going on here than you have said? Why would an engine builder be swapping gearboxes?
  3. What do you mean by "fork out a grand to have the same issue"? Particularly when you present it as a question, with a question mark at the end of the sentence. What are you saying?

With respect to later R33 speedo problems, there was a recent thread with a similar problem. Maybe the solution was posted. Search it up.

"could my cluster just be effed?" Maybe. But if you have problems with 2x electronic meters (ie, they both just receive pulsed signals) then.....would you not suspect a wiring plug related problem.

This is a logic problem. Arrange all the data, then apply logic.

If in doubt, take it to an auto electrician. If an auto eleccy cannot fix this in a couple of hours, I will be horrified at him calling himself an auto electrician.

Link to comment
Share on other sites

I don't pretend to know much about cars, I just love em. 

Answers to the following 

1. If I'm doing 60kph it reads on the speedo 30kph

2. There was a stagea awd in the shop at the same time as mine was... I don't know if they're visibly identical and if they are are the speed senders the same? Perhaps they had them sitting next to one another and just mixed them up...shit happens. I never said it was a good engine builder. Engine lasted 300kms shit it's self and then they sold up days later...

3. I don't want to spend $1000 on a new/different cluster, only to find out I've got the same issue

 

 

 

 

Link to comment
Share on other sites

1 hour ago, Jezzmode said:

I don't pretend to know much about cars, I just love em. 

Answers to the following 

1. If I'm doing 60kph it reads on the speedo 30kph

2. There was a stagea awd in the shop at the same time as mine was... I don't know if they're visibly identical and if they are are the speed senders the same? Perhaps they had them sitting next to one another and just mixed them up...shit happens. I never said it was a good engine builder. Engine lasted 300kms shit it's self and then they sold up days later...

3. I don't want to spend $1000 on a new/different cluster, only to find out I've got the same issue

 

 

 

 

Both the WGNC34 and BCNR33 have the FS5R30A as a transmission option. The Autech 260RS version is going to run the same sensor as a BCNR33. The RB25DET version does have a different speed sensor but the RPM/tach issue is unrelated. On R33s the tachometer comes from the ECU.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share



  • Similar Content

  • Latest Posts

    • That's the most absurd thing I've ever heard. I would go cut bellhousing over that monstrosity of a flywheel all day, every day. It puts a lot more mass further from the last main bearing. I've had nothing but problems with Collins in the past and refuse to ever buy their products again. I would not trust anything they tell you. He's playing his salesman card.  I'm currently at 640whp on a mustang dyno (~770bhp) with the intentions of running E85 and a lot more power this upcoming spring. Cheers, 
    • Nah, it's not the reduced knock margin. It is a direct mechanical effect of having to initiate the combustion earlier, while the piston is still rising, which starts to exert combustion pressure on the rising piston earlier, making the rest of the engine work harder to finish driving the piston up to TDC where the combustion pressure stops being a negative and starts being a positive. Your modern engine that only needs ~10° to make MBT doesn't waste the other 10 or so degrees of crank rotation. That's almost all of it. The difference in knock margin might go either way. Remember that modern engines to which you are currently comparing the long tractor engine (the RB) are now running super high compression, direct injection, tricky cam control and maybe even cylinder pressure sensors. You're not comparing apples with other fruit. It's apples and sea weed, or some other evolutionarily primitive vegetation. And remember, squish only really comes into play at the very end of the stroke. It certainly does good things, but it is not the biggest contributor to what's going on. It is quite possibly much less important in 4 valve head than 2 valvers also, because there is so much less squish available to a 4 valve anyway.
    • Food for thought, a longer stroke motor would need less ignition timing vs. a shorter stroke motor requiring more ignition timing.
    • Thanks Duncan, HART is only 10 mins from me (I did my bike license there), it'd be awesome if it ran these types of things.  Sutton Road does look good and they take fewer cars than SMSP which is good.  Surely you have enough land to lay a few million tonnes of concrete and some sprinklers D? 
    • I thought an engine that needs more ignition timing to make power is going to result in less power due to reduced knock margin? More time for the combustion to propagate -> more time for it to heat up the rest of the mix to detonation.
×
×
  • Create New...