93 Twin Turbo No Start


mvollans
09-29-2006, 05:19 PM
I work for an engine importer (please don't delete this I'm not trying to sell anything) and one of our customers says that he recieved a bad 13BTT. On the diagnosis he recieved from the shop he took it to it says that the engine had bad compression on one of the faces of the rear rotor. First off, I only know basic information about rotary engines. What I wondering about is how could it have bad compression on one face of a rotor? If an apex seal were bad I would assume that there would be bad compression on two of the three faces. The customer is also saying that the rebuild kit to repair the engine will cost him $1300, does that sound right? Any help you could offer would be greatly appreciated.

ghostrx7
09-29-2006, 05:26 PM
sounds bout right, also, its probably the gasket seal around one chamber of the two chamber set up. thats why mine was broken. coolant leaks into the combustion chamber...

jcsaleen
09-30-2006, 09:28 AM
Most people think that, The truth is you can run almost perfect compression on one face and have the other shit out on you because they're two entirley separate area's per say..

drftk1d
09-30-2006, 10:39 PM
Most importers don't give warranties on rotaries, mainly because nobody knows the condition of the engine and the motors tend to deteriorate when they sit for too long.

I wonder why he didn't have the motor compression tested BEFORE he put it in his car, or better yet, why not rebuilt?

And also, some shops charge 1300 for a full rebuild, not just a kit.

Tim McCreary
04-23-2007, 01:02 AM
I work for an engine importer (please don't delete this I'm not trying to sell anything) and one of our customers says that he recieved a bad 13BTT. On the diagnosis he recieved from the shop he took it to it says that the engine had bad compression on one of the faces of the rear rotor. First off, I only know basic information about rotary engines. What I wondering about is how could it have bad compression on one face of a rotor? If an apex seal were bad I would assume that there would be bad compression on two of the three faces. The customer is also saying that the rebuild kit to repair the engine will cost him $1300, does that sound right? Any help you could offer would be greatly appreciated.

I know this is an old thread, but some information should be noted:

One bad compression can occur due to a side seal for one of the compression chambers failing. Two bad compressions out of three means the apex seal is most likely failed allowing compression gas to move between the two compression chambers. I have seen complete kits with Apex seals, springs, etc for around that price. Others will rebuild (basic seals, reuse everything else) for that same price. It all depends on the condition of the internals.

Either way, rebuilds would be necessary for loss in compression.

Tim

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