A Great 930 Engine built by Hergesheimer

[heliolps2]

Hey..I'm interested to to know how long does a good quality modified 930 engine will last ?

Here's my story, I have had two engine rebuilds before going to Hergesheimer Motorsports CA, in 2001, the first two engine biulds only lasted 10.000 miles ea, maybe because the previous builder used reconditioned parts and so on, NOT a good idea.

Hergesheimer, went with NEW and better quality parts also,

1989 930
The inner case was polished ( for better air flow)
Boat tailed webbing
Shuffle pinned the case
NEW Porsche crank ($5000)
New Porsche standard bearing
New Nickosil Porsche P/C's and rings
New Carrillo rods with optional high strength rod bolts
Raceware studs
Polished and ported heads( machined for higher compression 7.5 to 1)
New valves from Porsche
Assco racing valve springs with titanium retainers
964 cams
New rocker arms and shafts
New ramps and chains

993 Carrera custom exhaust with heat.
Turbonetics T3/4 60-1 O trim 84ar dual scroll hot house
Tial 46mm wastgate
1.1 bar boost
Large intercooler Kokeln long neck

930/66 CIS fuel head 320mil per min, with euro fuel lines w/ 009 injectors SP at 6.9
Twin 044 fuel pumps
Tuned 112 WUR WP 2.8

Distributor 930/68 dual vac with custom pluming
Permatune CDI Box With Coil
NGK 08 plugs
Carrera plug wires and cap

I have had a few hiccups along the way, Please keep in mind the engine was rebiult back in June of 2001, 65000 miles ago,

With less than 1500 miles on the engine back in 2001, i was doing a DE at Las Vegas Int Speedway, while i was on the banking at 150 mph I lost power, I drove into the padock garage, I was lucky enough to have the Kelly Moss crew help me fix my car on the spot, I had broken both rocker arms on cyl #5 exhaust and intake, never thought much of it.

I have a G50 conversion with 8/32 RP , which is a great trans , But I manged to break it using KEPIII clutch, Now with about 18000 miles on the engine in 2003 I Broke the fork off the bell housing, Patrick Motorsports reinforced the bell housing and rebuilt the trans, Now using KEP Light 600, No more issues.

Now with 35000 miles and 2011, I removed one of my heat exchanger and noticed cyl 2 was very white , then I removed the other heat exchanger cyl 5 the same .

I tested the fuel system , I removed the fuel line from the injectors at WOT and got perfect results. OK I thought , may dirty or bad injectors , so I tested the injectors at idle and at 10% an 25 % throttle then WOT and again got perfect results.

I talked to Chris at TurboKraft he suggested that I adjust the fuel head on cly 2 and 5 !

I have the blk FD thats been modified to 320 ml per min with the 009 injectors , I thought they were maxed out , But I went for removed the little caps next to the fuel line and turned it clock wise.

not to much, turn it back a hair, I drove the car that way for a few days until I got my inferred temp gun , too rich turned it back a hair, EGT seams even .

I drove for a couple of weeks and pulled the heat exchangers and perfect color ,

Now with 51,000 miles early 2014, I was driving along when some youngsters pulled up an WRX STi , Great here we go..he he he I nail it ... I pulled away.... nice but then clank.. wtf , I thought i bent the valves, but when I turned the engine off something was still rattling for a few seconds afterwords, then i realized it was the turbo, When took the turbo out and apart the shaft was broken in half , I have sense replaced the cartridge with a new one,

Now with 57,000 miles and 2014, I was doing a late night run. when i lost power, I had her towed to the shop , i removed the valve covers rocker arms on cylinder 2 up and lower were broken, this happen to me at Las Vegas speedway on the banking at 150 mph back in 2001 on the fresh build , but that time it was number 5 cylinder. when the shop was doing a valve adjustment the wrench said that all the valves were way to tight and found number 6 set were cracked and about ready to let go also,

The rockers were replaced and the valves adjusted, fresh mobile 1 , and put the inter cooler back on.... But wait ... Half the O ring is missing . I think my turbo ate it, That' s what I think chewed up the turbo , that had posted about earlier , she started up great, leak down test done, and all is great .

So I'm a happy camper with that news, together with my leak down that was an average of 2% on all cylinders and the cam lobs with no pitting, this rebuild has just over 57.000 miles on it and much of it was not very pampered, many autocross victory's and many DE events and time trials, and some drag racing also and this engine is far from being stock,

So 14 years and 64,000 miles later, she still runs strong, When was the last time you had your car tested for Hydrocarbons , We checked the CO/AFR's but we overlook the HC's , While I was at a RPM Motorsports i had emissions tested, Kevin from RPM was very surprised at how low my HC's were with no cat , tested at 68ppm at idle, I had no clue what that meant to me,

Then Kevin said that it was a good indication of several things that the motor was running very efficient and plus other things like the low blow by ,good timing , spark, and AFR's and turbo, All working excellent, and he said, I can only hope to get those numbers with a fresh rebuild,and that sentiment was expressed by Chris from TurboKraft, Basically the motor was strong, the acceptable level without a cat is between 300 and 500, That is what Kevin told me, any thing higher, the engine may have some sort of problem, Now to fix the dam oil leak at the timing chain covers,

There you go, 14 years , time flys

At this rate when will i need any work done like rings or top end ?

[kenikh]

Great post. Looking forward to comments!

[quattrorunner]

me too

[redturbo911]

I want in on this one. I have been in that car and it deff runs strong. When Helio gets on it that thing pulls and keeps going.

[boosted79]

I'm assuming the car is not twin plugged based on the specs? That kind of longevity on the engine is impressive if you are running 1.1 bar boost.

[ficke]

Sounds like a good engine you have. I do not know how long they last but I have something similar to yours and mine was put together by Andial in the mid 80's and has 82,000 on it and leaks some oil but still runs strong enough.
So I would not sweat a few miles. Have fun and enjoy the ride.
I am running a twin plug 3.4L. with Carrillo rods.
I would think valve guides and such would be an issue more than rings and no lower end problems as I see it. So if anything I would do a valve job and check rings at that time. but No sense in taking it apart for S&G's.

[RarlyL8]

The Red Rocket engine had 14 years on the rebuild when I sold it and was just as healthy as day one. 350HP to the wheels which is a nice easy number for these engines. Conservative timing and a good fuel curve are important to longevity.

[TurboKraft]

64,000 miles / 14 years = not a lot per year, no surprise it's held up so well.

Hergesheimer is also solid, known for good workmanship.

I know of a hot-rodded C2T that was driven *hard* on the street, lots of launches, plus daily driver use. Fanatical about maintenance, he got over 230,000 miles out of the engine with no failures. Removed it before chancing a failure, everything looked good with only moderate P&C and bearing wear.

[heliolps2]

I think that some people think that highly modded 930 engines are grenades waiting to blow, Thanks to people Like Chris from TurboKraft AZ and Hergesheimer CA, (which by way was mentioned in Bruse Anderson's RIP, 911 Performance Handbook) and many others advise on this forum and phone calls has helped alot.

While Primarily a weekend warrior , except for 2013 , it was my daily driver and racked up about 20.000 mile that year, it would be nice to see go past 200,000 miles , As you all can tell i'm fanatical about maintenance, and making sure that it tuned just right,

thanks for Chiming in guys,

[kenikh]

Warm it up right, ensure you're never knocking, cool it down right, stay on top of maintenance. It's not magic.

[occb2]

Kenikh summed it up. Warm it up and cool it down. Two main things for longevity on a 930. That being said, highly modded 930 engines are grenades. I've seen 700 HP 930's. Kept adjusting the boost until it blew up. A rare 89 orig slant nose rare blue color with a factory 5 speed. Loved that car. My friend owned it and wanted to make it to a rocket. 930's with modest mods. 1 bar spring, k27 upgrade. Larger long neck intercooler with blow off valve. Headers and mod air intake make a great 930 with out killing it. I miss my 930. Here is a link of the day I drove it to port Newark sending her to Germany then Denmark. Only thing I didn't get to do to it was the head liner. https://www.youtube.com/watch?v=IHA_fzgItMI

[occb2]

I miss her so much. My 996 twin turbo is fun but nothing like the ride of a 930.

[occb2]

I do have a few questions on the car. Is the body steel? Also do you have any engine shots and also engine shots from the bottom of the car? Thanks.

[heliolps2]

I think I have pics of the engine on my profile info, The body is composite, for light wieght 2590 dry

[Tippy]

Why would anyone think these engines are grenades? Have they looked at the 8 bearings for the crank, 90* throws, stubby connecting rods, large journals, and super wide contact areas on the valvetrain?

This is pretty much opposite of old American V8 iron, that get pushed to much higher HP ranges all the time.

[occb2]

I don't think they are saying grenade all the time. The Porsche 911 turbo engines are bullet proof. The case was used even on my 996 turbo. I don't know about the 997 but I think so. I love the 930 out of all my 911's. I miss it and kick myself in the ass ever time I think of it. That being said, the most money I've ever spent was on my 930. Not just to buy her, to maintain her and rebuild her. Where I say they are grenades is when they are modified to kick out 700 HP, twin plug, crazy software program, twin turbo mad machines. They are a blast but not long for the world until a rebuild. Look at it in real world. You want a 700 hp race car then build it. Don't forget, race cars engines get rebuilt every race. So if your driving it like a crazy person, you will be rebuilding it. Like I had said, my buddy, Mike, owns Peoples II volkswagen in highland, has an orig, 1989 930 slantnose from the factory. With a 5 speed from the factory. A collectors dream. He gave it to Tio in the Bronx, who is known for his rockets and is a talented guy. Tio made him a rocket. All of what I said, twin turbo, software programing, controllable boost, what ever he did the car flew. I went with Mike on 9w at night and flames were flying out the back. The car was undoubtedly the fastest car I have ever been in, in my life. That car lasted about two weeks. Engine blew up and it has been sitting in the shop since then. If you have a stock or modestly upgraded 930 engine, you can put way over 100,000 miles on them. Those engine can handle a lot. Very well built, probably the best built engine in the world. IMO. A larger turbo, larger fuel lines, larger intercooler, better exhaust headers, the whole slap piston thing? Never got it and put blow off valves instead. All that you will get extra power and not blow up your engine.

Robert

[Miguel Antonett]

To answer real quick: "As long as your right foot will allow..."

[voitureltd]

Thanks, perfect intro. 8000 miles so far. Recent leak down 4% and 5% all cylinders. 600 on pump gas over 750 on 112 leaded and lots of torque too. Builder Bob Norwood Autocraft / Dallas Great info on Google, holder of over 100 world speed records in Guinness, says 30psi max but @24 it will last longer. Motec 48. Just broken a valve retainer hat so far ( previous owner over reved it. Easy to do in the lower gears when you see the recent dyno sheet ) prior to from 85 to 95lb injector re- tune and better waste gates. Hope it lasts now that in good hands.

[eric523]

I just found this and showed pops (Mark Hergesheimer) the post. Glad everything is going well!

He's still building motors, photo of the most recent turbo build...

[xbmwguy]

I think a motor that is built correctly, is tuned correctly, and keeping HP levels within the 550-600 level you can have longevity. To days efi systems have soooo many failsafes built in and fuels ,I think, that suit our air cooled cars perfectly- e85,unless you drive like a complete a## it will last