just wondering how many of you a) have timmers b) installed them by cutting ignition wires... i got the Greddy Full Auto Timmer... kind of scared to cut wires in the ignition...

 

Follow the directions and you'll be fine. I have the greddy FATT as well, but yet to be installed. I have helped out on the install of it on other cars and it isn't all that hard.

They're only wires, they can be spliced back together if you cut the wrong one.

 

just intalled one today actually on my friends car.. took us like 2 hours probally but we are by no mean experts on installing so if we could do it im sure you could.

 

I just put a Turbo Timer in a Supra a few weeks back, it didn't involve cutting ANY wires. From what I've seen from availible timers not many of them involve cutting any wires. Because of the importance of the wires you would have to cut, and because of Greddy's track record with electronics I don't think I would cut any wires to put a Greddy turbo timer in. Find another brand that doesn't involve cutting wires. The one I just put in had a digital boost guage built in to it and adjusted the timer based on the boost created. It was cool!

 

I emailed Greddy asking if they're planning on making a harness for the FATT... they said NO because that car is not meant to have a turbo...

considering they make both a turbo kit and a timmer for the car, it might be a good idea for them to make a harness for the timmer so that they can sell it in one package... the rep thought didn't agree with me.

hey KPiereson, can you elaborate on this

"because of Greddy's track record with electronics I don't think I would cut any wires to put a Greddy turbo timer in"

other guys, did you guys install the FATT with the speedometer too? or just the timmer... any hints and tips?

thanks

 

From what I've seen and read it doesn't seem like Greddy really knows too much about the electronic products they sell. I get the impression that Greddy doesn't engineer them in house, and most likely pays someone else to produce their products. Thinking about it, I guess my impression is based off of the RPM adapter that they make and don't really provide install instructions for, so its probably not a fair impression.

I do feel that there is NO reason to cut any wires while putting in a turbo timer. If the turbo timer requires you to cut wires then it wasn't engineered as well as it could have been.

I may be completely wrong, its just the impression that I get.

 

Don't you have to break the signal (once you cut the car off w/ the key and the timer takes control to leave the car on)? So I would imagine just tapping into the wires won't interupt the signal...

I have a TT harness, so mine was super easy.

 

No, you don't have to interupt the signal. Once the key is taken out the signal is gone. If the turbo timer is active then its signal will be the only signal present on the ignition wires.

You can detect if the key is out of the igniton in several different ways (usually by tapping the accessory circuit)

 

What I have seen is that they have harnesses for cars that come with turbos, and splicing is how all of them use a timer on non-turbo cars.

 

the GReddy FATT much like the other electronics a produced by TRUST japan and then rebadgedand sold he in the U.S. by reps who are knowlegeable as you mc. jobber. I like Greddy just have to go up a few heirarchial tiers in the company to get any answers.

 

is it possible to use a turbo timer to just keep the radiator fans on (not the engine) for while after turning off the ignition??

 

Thats one thing I've noticed about the VQ... Even if the car is pegged at it's hottest level on the stock gauge and the fans are on full blast, if you kill the car, the fans go off as well.

There should be some sort of built in timer like in some other cars....

 

I think HKS and PE sell fan controllers that allow you to controller the fan on off.

 

There are three relays under the hood that can be 'tricked' in to running when the car is off. You would need some sort of timing relay, but it wouln't be that hard.

 

If you have water cooled turbos and wanted to use a turbo timmer, then you would still want to keep the engine on so the water pump is pumping the chilled coolant and the oil pump is pumping oil around to the turbos. And on a non water cooled turbo you'd want the motor on to keep oil pumping to the turbos as they cool.

 

understood.. just noticed that with the APS TT kit, while my water temp stays within normal range during use (upgraded radiator helps this), once i shut off the car the water temp does rise significantly.. it appears that the coolant is circulating without the water pump being on..

i might try to use this for our Z..

http://www.viperclub.org/instructions/fankit.html

hesitant to use a turbo timer to keep the engine going since i know better to take it easy a couple of minutes before parking the car.. just want something to aid cooling in a more controlled fashion when its shutoff. like how some stock cars are setup..

 

The temperature continues to rise because there isn’t any circulation to the radiator which would allow the heat to dissipate to the outside air. So this probabally happens to all cars, turbo or non turbo. Were you taking these readings before you had the turbo installed?

Having fans cool the coolant that is already in the radiator might help, but it would be relying on convection to transfer the heat through the coolant and out to the radiator where the fans are operating.

You can buy an electric water pump which could easily be wired up to stay operational while the fans are on. The added bonus to doing it this way is that you would gain a small amount of power because you don’t have the parasitic loss from the stock water pump anymore.

 

took readings of both oil and water temps before the TT install in various conditions and times of the year, from when all the engine related components were stock. the upgraded radaitor had a nice positive effect on both water and oil temps.. with the TT the water temps do rise alot after shutting down the car, before FI this was not the case.. incliened to 1st try just getting the fans wired up.. all i'm seeking is a gradual cool down of the temps

 

Cool, let us know how you go and what kind of results you get, as im sure this would interest others.

Electric water pumps have been around for a while and alot of race cars use them, so they are a tried option should you need to consider them in the future.

 

any particular brand of water pumps.. links appreciated..