|
|
Thread: Smoking.....
|
rotarynews
Moderator
Too Many Rotary Websites
Posts: 206
|
posted August 30, 2001 07:02 PM |
|
Compression test time...
Time to go a quick and dirty compression test.... a standard compression test gauge will do, just hold in the pressure releaser, and you should see the three compression "strokes"... On the 3rd gen, standard is +90 psi per rotor... I think on N/A 13b's it should be 120psi per rotor. However, if you are getting "full power," it might be something else... what color is the smoke? white? blueish? black? Do you smell anti-freeze?
____________
*rotarynews.com
*FD3s.net
*mazdarepu.com
The best way to predict the future is to invent it!
-- Tom Matano
|
|
Jeff20B
Moderator
Posts: 661
|
posted August 30, 2001 07:40 PM |
|
Are you running Castrol 20W50? If not, maybe you should because it burns cleanly and is thicker than 10W40. Oh yeah, did you ever read why you shouldn't put synthetic oil in a rotary?
Sounds to me like one or both of your oil seals is old and leaking. I recently took an old water damaged 12A apart and couldn't belive that the big O ring in both small oil seals was in pieces! Both large ones were hard and cracked.
This sort of problem comes on quickly and smokes untill it runs itself out of oil :( (Like, from the sump). In other words, it needs a rebuild.
My REPU was the first engine install I ever did (I got it without an engine in it). It went well enough, but when I removed the engine last summer to put it in a project car to "see if it would fit", it came out quickly, and went back in even more quickly after I had proven that a 13B would fit and run in the MG Midget chassis. It took me like 5 minutes from hanging on the crane outside the truck, to being fully seated on the tranny with all the bolts tightened. Then it took mere seconds to wiggle the header on. I kid you not! I really spent lots of time doing my truck correctly in the begining, so that I could enjoy it in the future, in more ways than one.
So there you have it. Pulling an REPU engine is easy if you have an engine crane, a decent floor jack, and some patience.
Reinstalling an REPU engine was extremely easy for me (after it had been in my Midget for a week or two) and I didn't even need to remove the hood. I came in on the passenger side and only removed the pasenger front tire with the front end on jack stands. The only tough part was one of the rubber motor mounts which got stuck under the edge of the oil pan. I simply loosened the 14mm nut under it and it rotated and the engine slid nicely into place :)
That is, if you think you need to rebuild your engine, of course.
____________
'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7
|
|
risc
1st Gear
Posts: 23
|
|
posted September 04, 2001 08:12 PM |
|
Well a little oil will burn blue, a lot of oil will burn white. If it is the coolent seals it will be a lot of white smoke on startup and mostly taper off.
But since you said you were giving it a tune up, make sure that the PCV is still functional, if it is plugged up it will smoke a ton.
Good luck,
-Dom
|
|
|
|
|
