auxilary Posted November 22, 2004 Share Posted November 22, 2004 Had to scrap old motor mounts. Everything wasn't sitting right. Repositioned motor, measured everything 10 times over to make sure it was a proper fit: New crossmember mount. Somewhat cheating here, using a 1st gen rx7 front engine cover with front mount bolts, '85 gsl-se rx7 oilpan, will relocate pickup to the front. Motor, manifold, turbo. Darwin award candidate right there I wound up using the stock 240z tranny mount. Drilled out a hold to be bigger, and what do you know - lines up within 1/4" height difference! Because plasma cutters are fun! Exhaust manifold fits. At this point the motor isn't mounted, it's sitting on a block of wood. As the president of , I am proud to represent. Test fit with turbo And engine finally mounted via the front mount to the crossmember, properly set (i hope!) this time. Quote Link to comment Share on other sites More sharing options...
Guest 240zJake Posted November 22, 2004 Share Posted November 22, 2004 Looks really nice... makes me want one The bottom of your forks are really smooth, you must have an awesome floor, my forks always looked chewed up! Quote Link to comment Share on other sites More sharing options...
Guest Bris280zx Posted November 22, 2004 Share Posted November 22, 2004 You have no Idea how long i have waited for this post haha! I love the rotary engine and you are pioneering that sucka right into the Z now thats cool! Looking like good progress, i'm curious about that turbo, it looks HUGE! Mat. Quote Link to comment Share on other sites More sharing options...
slownrusty Posted November 22, 2004 Share Posted November 22, 2004 Wonderful pics!!! Quote Link to comment Share on other sites More sharing options...
DavyZ Posted November 22, 2004 Share Posted November 22, 2004 Man, the front mount just seems to disappear from sight--clean install! Now just for everything else!!! Nice work. Davy Quote Link to comment Share on other sites More sharing options...
NZeder Posted November 22, 2004 Share Posted November 22, 2004 Excellent pics. I am pleased to see the project is coming along nicely. Also I am very happy to hear about the gearbox cross member. Re my 4 Rotor project - my motorcycle sold on the weekend. So I am now starting the budgeting for the 4 rotor build. I will let you know once I have a better idea myself. Keep up the excellent work and updates. Cheers Mike Quote Link to comment Share on other sites More sharing options...
johnc Posted November 22, 2004 Share Posted November 22, 2004 I don't want to be a dick (go ahead and call me one anyway), but go back and re-do that weld in picture #2. I like how you've positioned it. Quote Link to comment Share on other sites More sharing options...
auxilary Posted November 22, 2004 Author Share Posted November 22, 2004 Fully aware of the welding - those are just tack-in welds to hold the plates together while we drilled them out. However, the welds you see are my doing (not bad, IMO, for a first time ever with a mig), and the plates are held by bolts just to support the motor. I am going to make another plate with redrilled bolt holes to raise the motor a hair for testing, and whichever works best, I will get tig welded nicely. Those plates are 1/4" thick, so not exactly mig friendly. Bolts are in place just to hold the plates together and support weight of an unmoving motor for now. The crossmember bolts will be doubled in number, so 6 bolts total supporting it to the crossmember, with doubler plates and spacers on top to make sure metal is not warped under pressure. I will also try to devise a better mount to distribute the twisting force of hte motor rocking side to side in turns. But this design works much better for the exhaust manifold and such Quote Link to comment Share on other sites More sharing options...
DavyZ Posted November 23, 2004 Share Posted November 23, 2004 I will also try to devise a better mount to distribute the twisting force of hte motor rocking side to side in turns. So you are isolating the motor from the mount, yes? That was the only thing I could think of last night after thinking about it all. The tranny is rubber isolated, so I'm assuming you would want something similar in front. Still, rotaries are smooth and not overly torquey, so maybe you don't have to do that? Curious. Davy Quote Link to comment Share on other sites More sharing options...
auxilary Posted November 23, 2004 Author Share Posted November 23, 2004 actually, there's no bushing for the transmission either: it's solid, and mike d. machined solid aluminum bushings for it instead of rubber this is going to be a heck of a jittery ride Quote Link to comment Share on other sites More sharing options...
Dan Juday Posted November 23, 2004 Share Posted November 23, 2004 this is going to be a heck of a jittery ride Just set your Illuminas on 5. You'll never even know the motor's running. Quote Link to comment Share on other sites More sharing options...
Jumbo240ez Posted November 30, 2004 Share Posted November 30, 2004 Hey Aux, looks good! Probably saved you around 10# too! Nice job! jon Quote Link to comment Share on other sites More sharing options...
Hugh Posted November 30, 2004 Share Posted November 30, 2004 Naw, rotaries can run just fine on solid mounts. They're nothing like piston engines. Everything is moving in a circle. Just don't bridgeport it, thats annoying no matter what sort of mounts you have! Quote Link to comment Share on other sites More sharing options...
auxilary Posted November 30, 2004 Author Share Posted November 30, 2004 this is going to be a heck of a jittery ride Just set your Illuminas on 5. You'll never even know the motor's running. Actually, rotaries do just fine on solid mounts.... like 180sx said, everything moves ina circle, there are no oscillations from pistons going up and down, so it doesn't shake. Quote Link to comment Share on other sites More sharing options...
auxilary Posted December 7, 2004 Author Share Posted December 7, 2004 ok, revised the motor mount, raised engine 3/4" in the front, very close tolerance between turbo manifold and frame rail. There is going to be engine movement no matter what, so I'll have to notch the frame rail. Quote Link to comment Share on other sites More sharing options...
buZy Posted December 9, 2004 Share Posted December 9, 2004 Sweet Zcar! Quote Link to comment Share on other sites More sharing options...
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