problems getting 13b running after rebuild

[JayDee]

Barry,

I have checked a engine by ear before and it sounded fine, when I put my hand down by the plug hole, I could feel that it only had one strong pulse, this engine had chipped a apex seal, which is now running really well on used housings(owner was on a budget).

Jason

[BarryB]

you\'re right, no compression on rear rotor:(
looks like an apex seal not working, I get one weak pulse in three instead of three strong pulses.

Barry, deeply depressed

[Glenn Butcher]

Barry,

It is possible that one seal is slightly jammed in the rotor (did you clearance them correctly? - as per the manual?).

You may be lucky in that it is stuck (sometimes they can even carbon-up and stick - ulikely as your engine is new).

You could try unsticking it (if it is stuck) by taking a leading plug out, get a torch, a mirror, and a small blunt instrument - turn the engine over until you see each seal and prod it in and out.

The best way is doing this through the exhaust port (but then you have to take turbo off etc.).

It may be possible that after running for a while it will all settle in.

Let us know how you get on.

.ps Nice one JayDee - I\'ll remember that one.

[Wobbz]

Why not use my technique, that I use on my computer when it doesn\'t work?

It\'s called BBT.... "Baseball Bat Therapy"... hahaha... i\'m sure you get the picture

Note: I do not recommend you actually baseball your car

[BarryB]

LOL!

I might just try that, not for the cars benifit but mine!:rollin

Barry

[BarryB]

Glenn

No I must admit I neglected to clearance the seals, I just checked them for free movement in their slots.

I have now made sure all the seals move in and out through the plug hole, they did, still no compression.

Which is the puzzling thing, virtually NO compression, not even one good compression stroke. That would require at least two seal to not be making. What else could cause a loss of compression on all three rotor faces?

Barry, stumped

[Wobbz]

Is it possible that the sides of the housings (walls?) are not secure properly? thus any air which is to be compressed just goes out a tiny gap?

Im a noobie to this stuff.. please dont flame me if my idea is stupid

[Carl]

Maybe you have left some side seals out or springs or some thing silly like that.Have you got anything left lying around?
Kind regards
Carl

[JayDee]

It could also be the corner seals, being to tight and stuck, I always find these need work doing to them to move smoothly

jason

[BarryB]

Gawd!

Your quite right Carl, there are three side seals lurking in the bottom of the box I kept all the bits in.

I cant believe I\'ve been so stupid:(
Amateurs eh?

Now I have to go through all the nause of scrounging the tools and stuff to get the engine out again. It took me nearly six months over this summer to get it done first time. God knows how long it will take this time of the year.

I\'m getting married in november, was hoping to go away on honeymoon in the car. Dont think thats going to happen now.

Thanks to everyone for your help and input.

Barry

[Wobbz]

You can do it mate!

Rip that little sucker out

It shouldn\'t be too hard... hell, my brother pulled out his 2jz (from his supra) in a day or 2... (and he had to remove radiators etc... ie. more stuff than the RX7\'s... as they block the engine)...



Sure, putting it back in is the hard part, but give it a go

[BarryB]

Hi again,
    Ok the engine is back out and sure enough no side seals on one side of the rear rotor. Doh!
However when I put one of the seals in I noticed that there were no springs in the slots!
And there is no trace of them in the box that I was using to keep all the bits. I\'ve looked high and low in the garage and they are just not there!
Could the engine have eaten them when it was run with out side seals fitted?
Any road up, the short of it is I need three side seal springs.
Anyone got any?
 
Barry

[Carl]

Hi Barry,
if you pm me with your address I\'ll send you some secondhand ones.
Kind regards
Carl

[BarryB]

Carl
   
pm done

thanks, you\'re a star!

  Barry (soon be rotatin\' again!)

[Glenn Butcher]

On ya Barry - check out the online manuals also at:

//www.iluvmyrx7.com (the factory workshop manuals are there).