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06-09-2015, 05:33 PM | #46 |
Professional Stick Poker
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S4 specific Six port actuator tube installed. Has to be at just the right angle and spacing to make it possible to still slide the header out of there.
13B header six port actuator tube by [url=https://www
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1979 SA22C (parts of one anyway) http://rotarycarclub.com/rotary_foru...ad.php?t=15585 1975 MG Midget (building) http://rotarycarclub.com/rotary_foru...ad.php?t=18681 1988 N/A SE model FC, dead stock and less than 85k on the clock. This one actually runs, so I don't fuck with it. |
06-11-2015, 03:39 PM | #47 |
Professional Stick Poker
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For those that try something like this be a little more careful welding in the O2 bung than I was. Went to take out the plug that I had protecting the threads and found that I had welded the threads together at the bottom.
I had to grind it back out and weld in a new bung.
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1979 SA22C (parts of one anyway) http://rotarycarclub.com/rotary_foru...ad.php?t=15585 1975 MG Midget (building) http://rotarycarclub.com/rotary_foru...ad.php?t=18681 1988 N/A SE model FC, dead stock and less than 85k on the clock. This one actually runs, so I don't fuck with it. |
06-15-2015, 10:21 PM | #48 |
Professional Stick Poker
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Had a question on it so I'll post this a little early.
I'm going stir crazy waiting for more pipe from RB, so I started figuring out the other big bug-a-boo with this swap. Cooling. Since the rotary requires far more cooling than the original piston engine, and frontal area is so limited, I had to plan out some rather strange stuff. The FC radiator is a single pass unit with 374 square inches of frontal area. The oil cooler carries about 30% of the engine cooling and is about 91.5 square inches of frontal area. The original MG radiator has only 140 square inches of frontal area and no oil cooler standard. Obviously we have a problem Houston. The tiny opening was going to need some rethinking to get a lot bigger radiator in there, not to mention what to do about an oil cooler. Here's a picture of the original opening after I had made some cuts to open it up a little. The Diet Coke box was supposed to only be background so you could see the opening better. Didn't work so well, but you get what you pay for. radiator opening 1 by Kevin Frank, on Flickr I'm going to open it up to the full width of the car. Removing the front stubs of the upper frame rails so I can fit the side tanks all the way up against the sides and maximize my radiator size with a 14" x 28" double pass radiator. I'm still down a little on frontal area from the FC radiator at only about 336 square inches, but I hope the extra efficiency of the double pass unit will make up the difference. Unfortunately it is going to have to be custom made so it's going to be expensive. The oil cooler I plan to use is an 11"x11" square stacked plate cooler that I will set underneath the radiator and between the frame rails. It is actually about 30 square inches larger in surface are than the original. However because I plan to mount it flat, (not much choice as there is just no room anywhere else), it will have less than great air flow. I plan to run a shallow scoop under the car to gather air for the oil cooler and run the fan shroud over the cooler along with the fan so that it draws air through both. A picture of the radiator opening, partially opened. radiator opening 2 by Kevin Frank, on Flickr I have to finish opening it up on the top pieces and cut down the frame rails.
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1979 SA22C (parts of one anyway) http://rotarycarclub.com/rotary_foru...ad.php?t=15585 1975 MG Midget (building) http://rotarycarclub.com/rotary_foru...ad.php?t=18681 1988 N/A SE model FC, dead stock and less than 85k on the clock. This one actually runs, so I don't fuck with it. |
06-15-2015, 10:52 PM | #49 |
RCC Loves Me Not You
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Liking the built and the opinion pictorial from your Flickr account
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1993 Yamaha GTS1000 1992 Celica Turbo AllTrac 1987 RX7 Sport 1979 Yamaha G1, KM24 powered 1975 Dolmar KMS4 |
06-15-2015, 11:26 PM | #50 | |
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There is also the option of upping the coolant flow rate also Gunny and or pusher and puller fans.
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06-15-2015, 11:28 PM | #51 | |
Professional Stick Poker
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edit: I used the opinion picture on EJ the other day. I have to keep an eye out and collect these little tid bits so I can defend myself 'round this place.
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1979 SA22C (parts of one anyway) http://rotarycarclub.com/rotary_foru...ad.php?t=15585 1975 MG Midget (building) http://rotarycarclub.com/rotary_foru...ad.php?t=18681 1988 N/A SE model FC, dead stock and less than 85k on the clock. This one actually runs, so I don't fuck with it. Last edited by GySgtFrank; 06-15-2015 at 11:52 PM.. |
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06-15-2015, 11:37 PM | #52 |
Professional Stick Poker
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I'll be using a puller electric fan, either a single 14" or a double 12". I'm not quite sure yet which way I'll go. A pusher fan tends to block incoming air so not such a good choice for steady state driving, but if I get desperate it may come to that. Upping the coolant flow may or may not work, too fast and you're not transferring enough heat as the coolant cycles, too slow and you are losing the opportunity to shed more heat. Again if it's a problem I may have to play around with that. I think I'm going to be alright though as I should be relatively close to the stock FC specs. I'll have to see once it's up and running.
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1979 SA22C (parts of one anyway) http://rotarycarclub.com/rotary_foru...ad.php?t=15585 1975 MG Midget (building) http://rotarycarclub.com/rotary_foru...ad.php?t=18681 1988 N/A SE model FC, dead stock and less than 85k on the clock. This one actually runs, so I don't fuck with it. |
06-16-2015, 12:02 AM | #53 | ||
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Yeah you seem to be close enough to spec so I would think a half puller on each for emergency use will be fine. That way you get the best of both free air and forced air when needed. I see a lot of non clutch fan converted to E-Fan race cars and they all run the fans to the oil cooler. If temp gets around 180 while idling kick on the fan and the temp just drops.
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06-16-2015, 05:05 AM | #54 | |
RCC Addict
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You should be able to find one close, and it shouldn't cost more than $300...? -Ted |
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06-16-2015, 08:09 AM | #55 | |
Waffles - hmmm good
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I always thought this would be a neat swap but after seeing the amount of fabbing needed I certainly wouldn't try it. Thanks Gunny for sharing.
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1980 GS stockport, Fat Nikki, RB Dual Facetfuel pumps, Holley regulator, RB Street port exhaust, 2GDFIS, MR2 MK I electric fans, 2G strut bar, relayed fans, lights and fuel pump, LEDs Project Fat Nikki Budget 12A rebuild Video setup < $30.00 |
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06-16-2015, 11:37 AM | #56 | |
Professional Stick Poker
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Glad it helps. I have done more fabricating than what most would probably consider really necessary, but I'm picky on how I want it to fit. There is a fair amount of fabrication involved with this swap no matter how you go about it though.
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1979 SA22C (parts of one anyway) http://rotarycarclub.com/rotary_foru...ad.php?t=15585 1975 MG Midget (building) http://rotarycarclub.com/rotary_foru...ad.php?t=18681 1988 N/A SE model FC, dead stock and less than 85k on the clock. This one actually runs, so I don't fuck with it. |
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06-16-2015, 11:44 AM | #57 |
Lifetime Rotorhead
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This is an out-of-the-box thought, but have you considered relocating the radiator and/or oil cooler out back? That would present a bunch of other problems, like proper airflow and plumbing/packaging, but it might give you more space to work with and solve the capacity/radiator size issue.
You don't need no steen-king trunk space, right? |
06-16-2015, 12:08 PM | #58 | |
Professional Stick Poker
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1979 SA22C (parts of one anyway) http://rotarycarclub.com/rotary_foru...ad.php?t=15585 1975 MG Midget (building) http://rotarycarclub.com/rotary_foru...ad.php?t=18681 1988 N/A SE model FC, dead stock and less than 85k on the clock. This one actually runs, so I don't fuck with it. |
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06-16-2015, 01:14 PM | #59 | |
RCC Addict
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Can't you just cut the core down and redo the endtanks for your application? Can't be more than $100 in labor and welding locally? -Ted |
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06-16-2015, 04:11 PM | #60 |
Professional Stick Poker
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The one local place, that I would trust with something like that, won't do that kind of work on aluminum radiators. They must have gotten burned on it at one time or another for them to be that gun shy of it. I don't have the means to weld aluminum myself. I really need to do something about that lack one of these days.
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1979 SA22C (parts of one anyway) http://rotarycarclub.com/rotary_foru...ad.php?t=15585 1975 MG Midget (building) http://rotarycarclub.com/rotary_foru...ad.php?t=18681 1988 N/A SE model FC, dead stock and less than 85k on the clock. This one actually runs, so I don't fuck with it. |