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Join Date: Jul 2006
Location: S. Florida
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Motor is done and running!!!

Finally finished my motor last night and it runs GREAT!
New 3.3 Mahle pistons and cylinders, rebuilt 930 heads with new valve guides that I ported the intake ports to 40mm,
40mm aluminum injector blocks, intake manifold holes port matched to 40mm, ARP head studs, resurfaced rocker arms, big end resized connecting rods with now pin bushings and rod bearings. (the big end of the connecting rod had become a little oval/eggshaped like all stock Porsche rods do after a while)
and a nice K27 7006 turbo.

I took it out for a drive last night changing rpms a lot and accelerating and decelerating a lot. Havn't taken it over about 4200 rpm or .6 bar yet.
I'll drive it some more today and then change the oil.
Both 964 cams are timed right at 1.26 spot on.

It has more low end torque and pep then before which is really nice for around town driving. I guess thats because these heads were machined down .018" more than the heads that were on it so compression is a tiny bit higher, it has freshly reground ground valves and valve seats, and new valve guides.. and the brand new Mahle 3.3 pistons and cylinders are much better than the ones that were in there.

!!
Old 05-01-2014, 06:11 AM
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DOODIMUS

allow me to be the first to say a humongous

_C_O_N_G_R_A_T_S_

_!_!_!_!_!_!_!_!_!_!_

that's gotta feel good

soooooooooo well done there sir... impressive as always

great to hear the intial positive impressions, looking forward to WOTthoughts upon breakin

again, congrats... you hugely deserve it
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Paul... CT | '87 930 | '08 M3 6gang vert |
past:

| '07 S6 | '98 M3 vert | '01 M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |
Old 05-01-2014, 06:18 AM
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Congrats and well done!
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1988 930 stock, 1976 914-4 (Hibernating 17 yrs, 76K)
93 Acura Legend LS coupe 6-spd, Type II (DD)
95 M3 Red, 97 540I 6-spd Black
98 Landcruiser, 01 Rav4 (Wife's)
Old 05-01-2014, 06:19 AM
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Brando
 
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Nice work. That's a big deal good job.
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Old 05-01-2014, 08:05 AM
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beancounter
 
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Congrats Jim...one of the best feelings in the world IMO
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Old 05-01-2014, 08:25 AM
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Champagne on Beer Budget
 
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Best feeling in the world having it all come together and fire up! Congrats Sir!
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Old 05-01-2014, 08:48 AM
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Congrats!
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Old 05-01-2014, 09:06 AM
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considering Jimbo *IS* undeniably / unequivocally the Chuck Norris of all things 930, this is poignant:



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Paul... CT | '87 930 | '08 M3 6gang vert |
past:

| '07 S6 | '98 M3 vert | '01 M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |

Last edited by krasuskyp; 05-02-2014 at 06:09 AM..
Old 05-01-2014, 09:11 AM
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Nice! Did the same a few years ago and couldn't be happier. Did you go with the fully-finned cylinders from the 964 turbo?
Old 05-01-2014, 09:38 AM
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Very cool. Congats.
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81 Pacific Blue 930 Euro coupe slicktop on a strict diet, Rarlyl8 headers, Blowzilla turbo, Tial waste gate, Full bay I/C, Home made center out exhaust, Leask WUR, MSD 6AL, PLX wideband
Wevo shifter, LSD. Next up, Cams, Heads and port work
Old 05-01-2014, 09:46 AM
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I love it when a plan comes together.
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Old 05-01-2014, 09:47 AM
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Congratulations
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Old 05-01-2014, 09:58 AM
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Quote:
Originally Posted by JFairman View Post
It has more low end torque and pep then before which is really nice for around town driving. I guess thats because these heads were machined down .018" more than the heads that were on it so compression is a tiny bit higher...
Shaving the heads is surely a part of it, but the big thing is you opened up those ports from their pitiful 32mm to 40mm, and installed some decent camshafts.
Now the engine can actually breathe! :-)
Enjoy, amigo!
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Old 05-01-2014, 10:29 AM
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OUTSTANDING!!!!! Mine should be starting this weekend... after 13 years off the road!!! So, I can feel your excitement!!!!
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Old 05-01-2014, 10:32 AM
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Thanks for the congrats everybody, it feels good!

Just got back from a photo job up in Jupiter, Fl and it ran perfect the whole way with the AC blowing good.
It idles smoother than it ever has before and it idled good before too. I'm still taking it easy on acceleration and changing RPMs and changing back and forth from 3rd and 4th gear every couple minutes and frequently getting on the gas and letting off the gas completely instead of cruising at a steady speed in 4th gear while driving on I-95. I havn't taken it over 4500 rpms yet.

It has 65 miles on it now and when it cools off a little I'll change the oil and filter with some more Valvoline VR 1 20w-50 non synthetic. I like synthetic oil but they say it's better to break in a motor on non synthetic so the rings seat in better. I'll switch to synthetic oil after 500 miles.

The 3.3 liter piston and cylinder set are Mahle stock replacement. I bought them 6 years ago when Kevin at UMW sold 3 sets in sealed boxes over on the Rennlist turbo forum for $1800. I figured at that price I wouldn't loose any money on them if I ever sold them and liked having them if I ever used them. They're in my motor now!.

They are the half finned cylinders Porsche used on the 911 turbo.
Here's what the set looked like when I first got them in the box.
The new wristpins are wrapped in brown anti corrosion paper inside the white styrofoam things. The pistons came with the rings on them inside the cylinders and you just can't see them in this pic.

The ring gaps were all lined up in a row when I pulled them out of the cylinders.
When I cleaned and oiled them and put them back in the cylinders with a little redline engine assembly lube on the piston skirts I positioned the ring gaps at 4, 10, and 2 o-clock starting with the top compression ring like the PDF copy of the factory manual I have says to do on page 102-26.

Quote:
Originally Posted by zaman fu View Post
Nice! Did the same a few years ago and couldn't be happier. Did you go with the fully-finned cylinders from the 964 turbo?


Here's the page in the factory manual describing where to set the ring gaps. It's good information.

Old 05-01-2014, 10:58 AM
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Chain fence eating turbo
 
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It's a great feeling!

Did it slowly come to life or pop off and purr immediately?

Brings back memories of mine lighting off. I read that many folks hear the new chains making noises but mind were dead silent. Of course, I have loud exhaust.
Old 05-01-2014, 11:01 AM
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More Pics and video and--blah--blah....and ...blah.....etc..etc PLEASE-...NEVER GETS BORING

WELL DONE!



Walt
Old 05-01-2014, 11:10 AM
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Quote:
Originally Posted by Tippy View Post
It's a great feeling!

Did it slowly come to life or pop off and purr immediately?

Brings back memories of mine lighting off. I read that many folks hear the new chains making noises but mind were dead silent. Of course, I have loud exhaust.
When I install my distributor with #1 at TDC compression stroke the rotor does not point directly at the notch on the distributor under the distributor cap. I couldn't remember which side of the notch I have to have the rotor pointed at when I install the distributor and I had it just to the right of the notch and that was not where it should have been because the timing was retarded one gear tooth on the distributor that way.
It would fire while turning it over on the starter motor but the timing was retarded far enough where it wouldn't start and run. That doesn't hurt anything but it wasn't fun at the time.
I knew it was firing on all 6 while that was happening because all 6 primary tubes in the B&B headers were hot.

Then I took the intercooler back off removed the charge pipe and pulled the distributor out and turned the rotor about 15 to 20 degrees or one gear tooth distance counter clockwise put it back in and put the intercooler back on and it fired right up and idled nice.
I had the power supply plug for the WUR removed while doing all this so it would stay in cold start control pressure mode and idle smooth once it started.

I did an injector flow test the day before so the fuel head and injector lines were all cleared of air and full of fuel ready to go.
Old 05-01-2014, 11:25 AM
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Chain fence eating turbo
 
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Luckily for me, Motronic is locked in one position and as long as cylinder one is in the right tooth, no worries of too advanced or retarded.
Old 05-01-2014, 11:46 AM
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Doing your own engine must be a very satisfying feeling.

Look forward to you posting your pre and post dyno charts to see the level of hp/torque improvements.

SR
86 930

Last edited by S1000RR; 05-01-2014 at 11:59 AM..
Old 05-01-2014, 11:53 AM
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