Michigan Rotary Club
Generation Specific => 2nd Generation Specific => 2nd Generation Build Thread => : FCwidman July 16, 2015, 06:16:42 PM
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Ive had my 7 for over a year now and have wanted to rebuild a rotary engine for a long time. I almost started my build last winter but my parents sold my winter beater/camaro parts car so I needed so spend all my money on not rotary parts. (now i have a neon :'( ).
(http://i1318.photobucket.com/albums/t654/jwidman14/IMG_1429_zps35bsmuty.jpg) (http://s1318.photobucket.com/user/jwidman14/media/IMG_1429_zps35bsmuty.jpg.html)
I finally decided to take the first step in doing my first build.Spur of the moment I drove out to Flint and bought an Na s4 engine in the sketchiest neighborhood ive ever been in.
(http://i1318.photobucket.com/albums/t654/jwidman14/IMG_1504_zps11z5vlz7.jpg) (http://s1318.photobucket.com/user/jwidman14/media/IMG_1504_zps11z5vlz7.jpg.html)
Strapped the engine down in the bed of my truck and its been there for a while now. I dont have an engine hoist or stand so I decided to just tear down the motor in the truck bed haha.
(http://i1318.photobucket.com/albums/t654/jwidman14/IMG_1505_zpsyqroxutc.jpg) (http://s1318.photobucket.com/user/jwidman14/media/IMG_1505_zpsyqroxutc.jpg.html)
Started tearing it apart and found bird nests, bugs, and even small animal bones. eventually my first noob mistake happened. I couldn't get the E-shaft bolt out and decided to break it down from the rear only later to find out that makes it impossible to get the e-shaft bolt out later, so i put it back togther and still can't get the thing out. I have an army of impact guns coming to see which ones strong enough to break it loose. So for now I've bean cleaning things as much as I can.
(http://i1318.photobucket.com/albums/t654/jwidman14/IMG_1507_zpsey8w0asp.jpg) (http://s1318.photobucket.com/user/jwidman14/media/IMG_1507_zpsey8w0asp.jpg.html)
my workbench
(http://i1318.photobucket.com/albums/t654/jwidman14/IMG_1508_zps60pb2aws.jpg) (http://s1318.photobucket.com/user/jwidman14/media/IMG_1508_zps60pb2aws.jpg.html)
While I had the rear housing off I noticed it had two big scratches in it, so probably gonna find another housing, hopefully the front is in better condition.
(http://i1318.photobucket.com/albums/t654/jwidman14/IMG_1512_zpsrb4rhktk.jpg) (http://s1318.photobucket.com/user/jwidman14/media/IMG_1512_zpsrb4rhktk.jpg.html)
As far as the build goes, I stil havent decided 100% what I'm going to do. Some form of porting will take place, all new seals, gaskets, ect. so im open to ideas. Things probably wont move very fast either, summers almost over and schools fast approaching. But for now the rear rotor makes for a good center peice in my room
(http://i1318.photobucket.com/albums/t654/jwidman14/IMG_1514_zps64mmmuga.jpg) (http://s1318.photobucket.com/user/jwidman14/media/IMG_1514_zps64mmmuga.jpg.html)
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Did you buy that engine from a guy named Jay?
I say you go all out on the engine, bridgeport that puppy and build like a 250hp NA, that would be cool!
And don't say summer is almost over, we aren't even a month in yet. You have 2 more months of summer left! ( I know you are saying this with respect to school starting again soon though)
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Looks like Jay haha. I did a street port on mine, but after realizing I should have gone all out with it NA I wish I went Bridge port, or found a cosmo 13b. But even a fresh NA 13b will feel less dog than a worn out tired 13b.
Gotta say Arctic Silver is the best color for FCs!
If I did another rebuild, I'd probably bridge port it, use S5 rotors, make sure everything was port matched, i.e. the intake, etc. Perhaps go Individual Throttle bodies and Megasquirt right off the get-go. Things I did right, street port, keeping the aux sleeves functional (Atkins sleeves), using turbo II housings rather than the NA ones (exhaust sleeves) header back exhaust, Lightweight flywheel (love it!), FD internal seals, and there's probably more I forgot. What I did wrong? I rushed through the rebuild, I didn't take the necessary time making sure 100% was in spec, maybe 75%? I should have gone straight to something like Megasquirt right away. But in all honesty, I should have build a turbo set up even if it was a 6 port. That's just my two cents. I had fun with it though! Which is all that matters.
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Ughhh, Jay. I'm done dealing with him. Not worth the hassle not worth the price. Everything is a struggle and he doesn't even understand if it parts are good or not (for some items)
That is most certainly Jay's place. I hate having to buy parts and having to pull them, I would expect them cheaper if I had to pull them.
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Yeah I got it from Jay, said he knew some of you guys but thought the forum was dead, maybe he'll get back on now. But now that I'm taking it apart and had to pull it I feel like I way over paid, but oh well.
I'm thinking a bridge is gonna happen, just not sure if I should do full or half, and do people bridge the 5th and 6th? I've got pineapple inserts laying around, and I planned on grinding out the exhaust diffuser things in the na housing. and I wanna do ms3 but I'd need some help setting it uive never done wiring harness or computer tuning and itb were something I was considering but they're pretty pricy.
But I guess we'll see what else is out of spec or scrap when I get it apart this weekend
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Kinda funny I sold jay a perfectly good NA keg for I think $200 a few years ago... Kind of a strange dude, didn't want to compression test it even. Didn't really care, he probably just sold it. Then anytime he has something I need he wants to dollar even if it is a POS. I don't think I'll ever buy anything from him.
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So far i feel completely scammed, since the housing that was suppsed to be good wasnt, so im scared for the front rotor and housing. Idk if i'd buy from him again unless he had something i really needed. seemed like a really cool guy but he wanted to teach me how to work on cars, like how to properly take a hood off haha had to tell him a few times that I've built motors before.
But didn't get to work on it tonight, and no woodward since I thought it was suppose to rain, but i spent my time working on a buddies evo so not a bad trade up. hopefully ill get the rest torn apart to see how many more things I have to buy.
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Well let me check my spares I could have some 6 port parts that are in great shape that will help you out.
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More bad news. Motor is completly disassembled and the water jacket is broken on the cente iron and every seal is stuck except one apex seal on the front rotor, only good news is it just looks like carbon and rusty crap build up locking it up.
So now I need a new rear housing and center iron. still havent checked clearences on the rotors so fingers crossed. I got an evo stuck in my garage and I don't like working on my stuff with other people around so probably won't get back to it till next weekend.
And that'd be great if anyone of you guys have some spares laying around I could buy, any thing local is better than paying for shipping.
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I got a bunch of misc NA spares that we could probably turn into 1 engine with what you got.
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Almost zero progress on the motor since tearing it down :'(
All usable parts are cleaned and degreased, seals ripped out of iron and finally got the front rotor seal out, thankfully it was just carbon that was holding the seals in.
I did buy a few things for the car, a cheesy ebay front strut bar is on it's way, cost me a whopping $38 but should make the engine bay look "cooler" for the dream cruise.
More importantly I got a deal on the exact set of coilovers I have been wanting, got them used from a pretty cool guy who has an fb fc and fd. Invited him down to the mrc meet on saturday too.
Heres my new Max coils, should be on by thursday just in time for the dream cruise.
(http://i1318.photobucket.com/albums/t654/jwidman14/IMG_1576_zpsh278qun2.jpg) (http://s1318.photobucket.com/user/jwidman14/media/IMG_1576_zpsh278qun2.jpg.html) nice and shiney gold
And if anyone has an s4 intermediate iron in good shape and a s4 na rear rotor housing I could buy bring it to the dream cruise, i'm trying to get the rest of the keg together before I leave for school in 3 weeks
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I got either an S4 or S5 NA middle iron laying around; let me check. one may have a streetport done to it.
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The coilovers got installed before the dream cruise, I love how stiff they are and I loved how low it was until I took the wheels off and saw that I was rubbing frame pretty bad on bumps. so now my tires are pretty worn, but I guess thats the price you pay for being low.
Here's a little before and after
before
(http://i1318.photobucket.com/albums/t654/jwidman14/IMG_1613_zpswrzlllge.jpg) (http://s1318.photobucket.com/user/jwidman14/media/IMG_1613_zpswrzlllge.jpg.html)
After
(http://i1318.photobucket.com/albums/t654/jwidman14/IMG_1602_zps2cjslsvp.jpg) (http://s1318.photobucket.com/user/jwidman14/media/IMG_1602_zps2cjslsvp.jpg.html)
Here's the aftermath of being too "stancenation"
(http://i1318.photobucket.com/albums/t654/jwidman14/IMG_1610_zps4yudoesb.jpg) (http://s1318.photobucket.com/user/jwidman14/media/IMG_1610_zps4yudoesb.jpg.html)
Car has since then been raised about 3/4" and doesn't rub anymore. I'm looking into buying a dremel to do porting with, anyone have any recommendations for a good one and what bits are good?
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I would not port with a dremmel it will take FOREVER. I would be persuaded to do a street port for you though :) I have all of the tools and equipment.
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How about a bridge and street port Fidelity ;D
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I second this!
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How about a bridge and street port Fidelity ;D
I could do that too. I built this half bridge (large streetport center)
https://www.youtube.com/watch?v=9_DGw5jtUnM (https://www.youtube.com/watch?v=9_DGw5jtUnM)
https://youtu.be/LqNVKgdX7qE (https://youtu.be/LqNVKgdX7qE)
made about 200whp on a up draft 48mm carb @ 12:1 AFR
I know a guy in wixom with a small home based machine shop that I have the initial drilling and milling for the bridgeport.
but this will take some time.
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that sounds awesome! Was that on a six or four port? Impressive either way
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this was 4 port, s4 rotors too.
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That things awesome!, When you do a half bridge do you bridge the primary or the secondary ports? and if you bridge the secondary do you bridge the aux too since im using 6port irons? And do people usually keep the actuators with a bridged 6port? (I could probably research this some more, but c'mon thats what you guys are for ;D )
How much would getting a half bridge and streetport run me? And Fidelity I'll buy that center iron off you if wanted to sell it, after your finish the port tho
Also still in the market for s4 rear housing, or maybe a set of T2 housing for a decent price.
Other stuff I'm going to need eventually are : 5 6th actuators if I keep them, T2 secondary injectors, also might need a new throttle body. If anyone have them one day I might buy them
Moving back to school this weekend which means back to my crappy minimum wage job, so my super slow build will get even slower. But in a few weeks I think im going to buy the rebuild parts/kit. My original plan was to use the atkins C kit, which has everything but oil pump chain and thrust bearings which i'll order too.
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Hey guys, update coming soon but for now I need some help getting it running right. I did the dreadful emissions Delete to make my engine bay pretty, put it together and had tons of vac leaks, fix all those and now it runs perfect except for the fact that it won't idle on its own, anything under 1k ish it starts dying but sounds smooth and beautiful above 1k (gilmer belt is awesome/annoying)
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Make sure the snorkel is on right and not making a leak. This happened to me before, it may need to warm up first too with emissions deleted.
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by snorkel do you mean the intake elbow after the throttle body? and something terrible happened pretty much right after I typed the last reply. revd it to like 4k (fully warmed up) and it got loud kida like the cogged belt was slipping, so a pretty violent noise, checked the belt and its not that. spark plugs are fuel fouled out but i dont think that was the cause, just a result of whatever happend. my buddy ian (fcstark on here) said my water pump was pretty wobbly so maybe the noise is just the waterpump grenading instead of my engine grenading.
anyone ever have something like this happen?
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Yep, if there's a bit of a gap between the TB and the bend, it can cause symptoms like that, obviously vacuum leaks too.
I know the water pump pulley can slap around and make that noise. Definitely check that out, how are you enjoying the belt sounds so far?
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I love the belt thanks again,my neighbors probably not so much
I'm 99.5% sure it's the water pump, the shaft is broken or something, it's super hard to turn and wobbles like crazy. I think the no slippage and weight of the new pulley took out the 27 year old pump. Got a new one and set of spark plugs on the way
I'll post some pictures tmrw of the winter clean up process I've been doing