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engine drop

Hows my fellow pelicanites. I finished a leak down tests with some poor results on 2 cylinders 11% and 25% sooo engine drop with new rings are planned and probably a clutch. Well I would like to solicite opinions as to drop engine separate or together with trany?

Old 01-13-2011, 07:14 PM
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Both at the same time.

Cole
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Old 01-13-2011, 07:23 PM
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Drop them both. Much easier to mate the trans./ engine on the floor.
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Old 01-13-2011, 07:25 PM
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OFF THE BOOST PIPE NOW...
 
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Both.
Old 01-13-2011, 08:14 PM
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No brainer, ,both.
I've done maybe 5 or 6 drops and every time I look at it and think about trying to seperate those two without dropping them both and every time shake my head and think WTF ?? Why would anyone ever try it without dropping both.
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Old 01-13-2011, 08:21 PM
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sometimes it can be a real pain in the ass to get the tranny separated from the motor (search tranny and motor separation). It's easier to drop both.
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Old 01-14-2011, 11:31 AM
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I've done partial engine drops to pull out the tranny, but would pull both out to work on the engine. I can think of no benefit to leaving in the transmission when pulling the engine. Good luck on your project, and beware of the "while you are in there bug". BTW, where are you located maybe somebody is close by that can help.
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Old 01-14-2011, 05:00 PM
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Both, absolutely.
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Old 01-14-2011, 05:06 PM
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So John, what happened? That car was pulling pretty hard at VIR last fall.

Are you attacking that job yourself? Your question concerns me...
Old 01-14-2011, 05:22 PM
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Hello guys and miguel so its settled i will drop engine and tranny togther . Fortunetly jacob is coming up to ct on sunday and we plan to drop the motor . I will try to post some pics. Im planning on just replacing rings because the engine has less than 10,000 miles since rebuild though previous owner replaced fuel delivery with motec m 48 and once we closed loop with o2 sensor it was discovered motor was running lean on boost which im thinking may have contributed to broken rings. I will no more on sunday and thank you everyone
Old 01-14-2011, 08:03 PM
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Take lots of pic's and what you had to un-hook to get it out , planning on dropping my 3.3 later this year and could really use some heads up "watch out for this" kinda advise
Old 01-15-2011, 10:27 AM
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Quote:
Originally Posted by Shadetree930 View Post
Are you absolutely sure a rebuild is needed? Did you 'hammer tap' the valves with poor numbers to insure it is not simply a case of dirt in the valve causing the leak?
Cylinders are leaking down through the crankcase breather and he's got exhaust-like puffing of smoke/steam from the oil tank filler when the engine is running. Classic symptoms of broken rings.
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Old 01-15-2011, 11:37 AM
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Quote:
Originally Posted by Shadetree930 View Post
Well then .................... WHILE YOU ARE IN THERE ..........................

A perfect post for my 911th post.
Something isn't right with John's clutch too, so we will be addressing that...engine has to come out anyway.
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Old 01-15-2011, 12:18 PM
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tomorrows the big day should be fun
Old 01-15-2011, 08:15 PM
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pix pix pix pix pix

Here is the scene when we arrived (me and fellow pelican Vinny aka VinBarret). John had the car up on stands, sway bar removed, CVs detached. All in his garage which is cleaner than my house. Nice place to work:



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Old 01-16-2011, 08:46 PM
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well today was the big day, although I have to admit I was really along for the ride watching both Jacob & Vinny. For starters, I have to say an engine hoist made life much easier. We were able to lower the engine with the hoist from the top of engine compartment on to Jacob's RV jack, pull it out from under the car & then rehoist the motor on to engine stand. All transitions were VERY smooth. Currently all motor parts are taking up a full bay in my garage. Unfortunately, as suspected, 3 of the cylinders had broken rings. and the best was cylinder #6 having fused rings to a warped piston. (pictures to follow) Looking over the parts, it has been decided that the heads will be going to a machine shop. #6 cylinder & jug needs to be replaced or all new cylinders & jugs.... yikes! ..... and a new clutch, also as suspected. A lot of this could have been avoided with a properly tuned motor. However, that was out of my control. And during my purchase, a compression test did not reveal this issue, if it existed.

Anyway, the joys of owning a Porsche 930. .... with an adventure & $$$ to follow. I have to say, though, it was exciting watching my motor come apart into a million pieces. :-)
Old 01-16-2011, 08:58 PM
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more pix

Lowering the engine


Its out


Engine on stand...deep snow in CT


Longblock---->


One of the header nuts gave us trouble, but Vinny broke its kneecaps and it decided to cooperate:


#6 piston, worst leakdown of the bunch. See anything wrong here?


We found busted rings on 2 other pistons also. #2 and #5 exhaust valves were white...look to have gotten veerrrrry hot.

John's pristine garage turned into a Porsche parts yardsale:


About 9 hours after we started = shortblock----->
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Old 01-16-2011, 09:00 PM
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John, sorry to hear it man, but they always come back to life stronger and faster! (hint, Hint)
I see cams, ported heads, bigger pistons and cylinders, etc in your near future! why not shoot for 500 at the wheels? Your doing it yourself now and I know between you and Jacob it will put back together better then factory! keep pics and updates coming!
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Old 01-16-2011, 09:11 PM
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Quote:
Originally Posted by pkracer21j View Post
I see cams, ported heads, bigger pistons and cylinders, etc in your near future!
The heads appear to be ported...need to measure them. Cams are supposedly SC grind. The engine already has 98mm pistons (3.4 liter). It will depend on John's desire and budget as to whether he goes bigger or not.
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Old 01-17-2011, 07:31 AM
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hello everyone. as you can all see, there's some damage to my motor. I would really benefit & like to solicit everyone's opinion regarding my options in my re-build. First option to consider is finding a matching jug & piston which is a mahle 3.2 liter bored out to 98 mm. Or cough up 4 grand for a set of 6 3.5 liter nikies (sp?) that doesn't require my block to be rebored. Or any other options people can think of?? Also during this rebuild I'm going to need a new clutch. would like to solicit opinions regarding types? My engine made 455 hp at the crank. Not huge amounts of power, so I would really like a comfortable driving clutch. Last, I have some pictures of the turbo & would like anyone's input if they can identify what type of turbo it is & what their thoughts are about this turbo.

thank you everyone.

Old 01-17-2011, 08:24 PM
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