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Join Date: Feb 2004
Location: Omaha, NE
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Wiring Harness & Timing Belt ?
I just pulled a 924S 1988 Engine out and am putting a 944 1986 Engine back in, will the same wiring harness work?
Also, in the fix it manual it says that a dealer has to do the final adjustment on the timing belt. Is this true? What tool would I need to do it on my own? Thank you, Rob Hogenmiller www.formularacer.com |
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03-06-2004, 11:22 AM
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why are you switching to a 86 944 engine when the 924S is a 88 engine and has more HP
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1986 951, Stock for now. ]87 924S Gaurds red- SOLD after 11 years of ownership |
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03-06-2004, 11:34 AM
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Because the timing belt broke on the 88 engine. Any ideas on the timing belt or wiring harness?
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03-06-2004, 12:32 PM
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go with the wiring harness that matches the DME...if it's the 924S DME then that's the harness you should use (and AFM etc etc)
always a good idea to use 'factory' tools to adjust belts...are they new? and there is a Kricket tool that many use
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Tom Early '85 944 Last edited by carsontc; 03-06-2004 at 01:57 PM.. |
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03-06-2004, 01:55 PM
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Doing the timing belt isn't that bad. The bad part is you'll need to do new exhuast valves. My machine shop charged approx. $250 parts and labor. Use a flywheel lock , it makes it a relitively simple process.
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Still looking for the right deal on another P-car 1968 BMW 1600 2 liter 1956 Ford F250 1955 BMW R69 1999 Range Rover Callaway #011 of 220 (Yeah, as in Callaway Corvette...) |
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03-07-2004, 04:49 PM
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Might want to pull the oil pressure valve out of the 86 and check it. If it's the one piece assembly you should be ok. If it's the spring and piston type see if the one from the 88 engine will fit.
Think the 88 engine has a spring loaded timing belt tensioner. The 86 is a manual adjustment. Other wise just use the fuel rail and harness from the target car including the AFS. Personally I would have pulled the head on the 88 engine and had a valve job done. Much easier than pulling an engine.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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03-07-2004, 05:33 PM
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Socal,
Thank you for the advice. I will pass that on to my buddy. Unfortunately he probably didn't do his homework on how to fix the car. He purchased an engine instead and then paid me to fix it. In total he will have around $1700 to fix it. How much would a valve job been? Thank you. |
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03-07-2004, 05:54 PM
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Less than $500 in parts and machine shop costs. Then your labor rate per flat rate. Have you worked on a 944 to this extent before?
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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03-07-2004, 06:02 PM
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the DMEs are different and related components air flow meter etc...might be best to use all the components that are from the original car
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1988 - 924S Guards red, auto trans |
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03-07-2004, 08:02 PM
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Adendum: Balance/timing belt asjustment is not that critical as long as it's not too tight. The Krikit tension gauge seems to do a decent job of it.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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03-08-2004, 07:51 AM
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Quote:
The big difference is a few details on the block such as the temp sender for the gauge (smaller single pole) and the oil breather bottom hole in the block (smaller). As long as the basic engine is used; EGBOK!* Looking at the temp sender is a sure bet on finding an early replacement engine in a later car. *Everythings Going To Be OK.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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03-08-2004, 07:57 AM
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and check it again after about 1500 miles or so
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1988 - 924S Guards red, auto trans |
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03-08-2004, 07:57 AM
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Never pulled an engine out of any car before, but did pull the engine out ok. The steering shat and exhaust bolts were rusted shut and decomposing, especially the exhaust bolts. Had to hacksaw one bolt off and the steering rod/shaft was VERY difficult to get of the geared spline.
Now switching the wires and setting up the belts on the new engine then probably put the new one back in tomorrow. |
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03-08-2004, 10:53 AM
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The steering shaft bolts are hardened and the nut is self locking. Need to replace with same. Don't forget the brown wire from the steering rack to the cross member. It's for the horn.
The exhaust bolts are every ones nightmare. Replace with same. I take it you got the DME harness off of the 86? What else came with the 86 engine? Use a spring center clutch plate if you have one. The rubber centers separate at the drop of a clutch peddle. Again you just might want to pull the oil pressure valve out and see which type it is. I would use the one piece assembly rather than the spring and plunger. Also use a MAHLE oil filter or other Porsche approved oil filter as these have a check valve in them to keep the oil from bleeding off.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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03-08-2004, 12:08 PM
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Socal,while we are on the subject ...any reason to not use a Mobil 1 filter if running synthetic?
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1988 - 924S Guards red, auto trans |
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03-08-2004, 12:10 PM
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Quote:
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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03-08-2004, 12:17 PM
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Rob: What's your friend going to do w/the old engine?
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03-08-2004, 02:10 PM
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1987 Porsche 924S 2.5 modified
1983 Porsche 944 2.5 liter
