1984 RX-7 Race Car with BP! (almost a Miata)
#301
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Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,910
Total Cats: 51
any more details on the engine itself?
Sounds pretty smooth (besides the ignition issue)
lightened crank has me intrigued.
any info on the balance? tolerance for the balance that you used?
Building my own engine right meow.
Sounds pretty smooth (besides the ignition issue)
lightened crank has me intrigued.
any info on the balance? tolerance for the balance that you used?
Building my own engine right meow.
#302
Oh boy, you asking hard questions. I did most of the grinding and shaping of the crank (old school). I have all the info as well as the balancing that I will need to dig up. It's been 2 or 3 years since all that got done. Even on my previous engines I have noticed than a simple balance does wonders if they have everything (crank pulley and flywheel/pressure plate combo.
Anyways I'll dig up the info and post it when I get a chance!
Anyways I'll dig up the info and post it when I get a chance!
#304
Elite Member
iTrader: (8)
Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,910
Total Cats: 51
Oh boy, you asking hard questions. I did most of the grinding and shaping of the crank (old school). I have all the info as well as the balancing that I will need to dig up. It's been 2 or 3 years since all that got done. Even on my previous engines I have noticed than a simple balance does wonders if they have everything (crank pulley and flywheel/pressure plate combo.
Anyways I'll dig up the info and post it when I get a chance!
Anyways I'll dig up the info and post it when I get a chance!
Any pics and weight of the final crank as well? Very interested in building my engine to beast spec.
#307
As for pictures, I might have a picture of it already installed, but didn't carry my camera with me back then and wasn't using the iPhone camera much until later on. So that might be all you will get!
The throttle response is pretty darn amazing which I am pretty happy with. We shall see how it does under boost. It runs pretty smooth too when I sat in it considering it is basically solid mounted.
Don't have the pedal connected to the TB yet. Will have to figure something out there! Put the body panels on Saturday and had a few people over to check out the car. I will fit the front panels and shape the hood and then the engine comes out for final welding and girding and powder coating the chassis!
#314
I second the awesomeness of having bal/crank/rods/pistons/flywheel/clutch pressure plate(All the rotating mass I suppose you could shorten it too) balanced and I had my crank micro polished.
I didn't lighten the crank though. I threw around the idea of knife edging but everyone said it'd be no good and make the crank weak. Dafuq is going on here?
Though even I'm not optimally lightened like you. Mine revs fast as hell.
So whens the day I'm going to blow my load and watch the dyno video?
I didn't lighten the crank though. I threw around the idea of knife edging but everyone said it'd be no good and make the crank weak. Dafuq is going on here?
Though even I'm not optimally lightened like you. Mine revs fast as hell.
So whens the day I'm going to blow my load and watch the dyno video?
#316
Dyno is probably a couple of months away I would say!
Yeah, I have been looking at the TKO-600 with that bell housing. There is also the TKO-750 which is a beefed up TKO-600. Have to find out how the shifting is as there is mixed info about the TKO's not shifting very well above 6000 rpm without modification.
The valve cover is painted and and cam sensor is mounted. Will have to wire up today and hopefully the sequential/COP will work!
Yeah, I have been looking at the TKO-600 with that bell housing. There is also the TKO-750 which is a beefed up TKO-600. Have to find out how the shifting is as there is mixed info about the TKO's not shifting very well above 6000 rpm without modification.
The valve cover is painted and and cam sensor is mounted. Will have to wire up today and hopefully the sequential/COP will work!