Guest speedstar Posted November 23, 2005 Share Posted November 23, 2005 hey guys i have a 74 datsun z and am putting a rb25de-t into it and was wondering if i put the autometer guages in it will the speedo and tach and fuel level guages read correct? i know the fuel level might not be 100% acurate but will the speedo and tach work wired to the rb25 harness? please help. 500.00 bucks is a lot to spend on new guages if they arnt going to work! Quote Link to comment Share on other sites More sharing options...
Guest speedstar Posted November 23, 2005 Share Posted November 23, 2005 anyone? Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted November 23, 2005 Share Posted November 23, 2005 500.00 bucks is a lot to spend on new guages if they arnt going to work! Shoot, I paid that much just for my boost gauge and the fuel preasure gauges... Try buying 9 of them, all electrical... As far as the speedo, I'm sure you will need to go electrical, as the RB25 trans I have has the sensor for speed. The tac is another story. Depends where you want to hook it to. If your trying to use the RB wiring harness, I can't help. The fuel level is another small problem area if you are keeping the oem tank/sender. I belive guys have used the AutoMeter hooked to the oem stuff, and it reads close. You just need to search the archives to see what model meter they used... Hope this helps you some... Quote Link to comment Share on other sites More sharing options...
SR240Z Posted November 24, 2005 Share Posted November 24, 2005 if you are using the RB harness you will need the MSD Tach Adapter for distrubutorless engines. You can buy it through summit. You could run a mechanical speedo and put a mechanical sensor into the RB tranny as well. Quote Link to comment Share on other sites More sharing options...
240Z_Master Posted November 24, 2005 Share Posted November 24, 2005 The problem with the autometer gauges for fuel level i think is the fuel sender. DIfferent ohm ranges or what not. Quote Link to comment Share on other sites More sharing options...
Guest speedstar Posted November 24, 2005 Share Posted November 24, 2005 but the rb engine and harness should have a vehicle speed senser on it some where so if i use a autometer electrical speedo and we hook it to the vehicle speed sensore it should work right? and as for the tach couldnt i just cut the harness off the wires that go to the rb tach and wire them to the autometer? oil pressure and water temp should both be machanical though right? Quote Link to comment Share on other sites More sharing options...
BringIt Posted November 24, 2005 Share Posted November 24, 2005 Not all distributerless ignitions need a tach adapter. You just need to find an acurate tach signal. But I dont know if the RB has one that will work. Quote Link to comment Share on other sites More sharing options...
Guest JAMIE T Posted November 25, 2005 Share Posted November 25, 2005 if you are using the RB harness you will need the MSD Tach Adapter for distrubutorless engines. You can buy it through summit. You could run a mechanical speedo and put a mechanical sensor into the RB tranny as well. I guess this is not the answer you had in mind? Quote Link to comment Share on other sites More sharing options...
Ed260Z Posted November 25, 2005 Share Posted November 25, 2005 I guess this is not the answer you had in mind? I think that he is trying to keep the wireing as simple as possible. Nevermind that it will take forever to track down the right wire, and he'll still need the MSD adapter. If your getting a Autometer Tach, why not get the matching Speedo? BTW you shouldn't throw stone in a glass house, name calling is not a good idea! As for me I want to find a way of keeping the stock tach. I'm going for the stealth look. The speedo is easier since there is a company called Abbott Enterprises making an adapter called a Cable X. It costs about as much as a new Elec. speedo. so if no one can help me wire the stock tach to the RB I'll just get all new gauges for the car. So tell me Jamie T, do you know how to hook up the stock tach? Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted November 25, 2005 Share Posted November 25, 2005 just a little research in the archives would have stoped this thread from turning to shet..... Quote Link to comment Share on other sites More sharing options...
Guest JAMIE T Posted November 26, 2005 Share Posted November 26, 2005 just a little research in the archives would have stoped this thread from turning to shet..... Agreed! I looked back and perhaps I was a bit hard on the newb, so I took it upon myself to delete my posts. Newb, I am sorry for causing you such pain, and apologize for my remarks. Enjoy your stay here at HybridZ. Quote Link to comment Share on other sites More sharing options...
240Z_Master Posted December 11, 2005 Share Posted December 11, 2005 Okay, not to bring back a bad topic from the dead or anything... But is there an electronic sensor on the trans that I don't know about that could possibly be used for the electronic speedo? Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted December 11, 2005 Share Posted December 11, 2005 Thats what is on my RB25det trans... Quote Link to comment Share on other sites More sharing options...
stony Posted December 11, 2005 Share Posted December 11, 2005 Sorry to have let this go on so long didn’t realize it had gotten little fugly in here. The rb25 tranny does have an electrical sender that "should" work I did a bit of research when it was in my car just never got around to it. It has 2 wires coming out... a ground and a power. The tach has I believe a couple wires also. All it does is reads the pulses from the sender. The tach would have to be calibrated to the speed of the car to the speed of the pulses there are detailed instructions on how to do this on the autometer web page in the instruction section. As far as the tach.... the car I got my new motor from had an autometer tach hooked up to it with no special adapters and it worked fine. Ask over at skylines down under they deal with nothing but skyline stuff and should have the answer readily available. I would search as you will probably get slammed over there to for asking such a "simple" question without searching first. In the future any post that goes bad ie name calling and crap lie that will be delt with swiftly. Keep the post of a technical or friendly nature and we won’t have problems. For those of you who think I'm being too harsh read the rules and guidlines at the top of the page. Quote Link to comment Share on other sites More sharing options...
240Z_Master Posted December 12, 2005 Share Posted December 12, 2005 Thats what is on my RB25det trans... If the sender is on the speedo cable cog thing, I think it got broken off.. =( Does it go here? Otherwise if its in the back then I'm in good shape! Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted December 12, 2005 Share Posted December 12, 2005 If the sender is on the speedo cable cog thing' date=' I think it got broken off.. =(Does it go here? Otherwise if its in the back then I'm in good shape![/quote'] Yes, it has been broken off.... you did have a electrical sender there. Quote Link to comment Share on other sites More sharing options...
240Z_Master Posted December 12, 2005 Share Posted December 12, 2005 Yes, it has been broken off.... you did have a electrical sender there. I wonder if a Z32 electrical sender will work. If anyone knows of a replacement for this that would be super! Quote Link to comment Share on other sites More sharing options...
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