DAGREEKNYC

I see a few members here own Porsches or have in the past and i need to pick some peoples brains about a car im driving to MD next week with the intentions on purchasing .

Its a 1988 930/911 slant nose turbo with 22k on the clock .

I need to know the following if anyone can help .

1. Is there a code on vin that tells you if it was a factory installed slant nose ?

2. IS there a registry one can refer too so i can confirm that it is all original and not a dealer add on ?


3. And what was the reason for the 2 spark plug conversion per cylinder ? This car had this conversion done and i have also seen it on other turbos and would just like to know why


Thanks for any input !!!

X2Board

First place to go to: http://forums.rennlist.com/rennforums/index.php?s=

I'll be back with some more answers for you in a bit.

X2Board

VIN Decoder. You may need to register for an account if you don't have one already.

http://www.renntech.org/forums/index...de=vin_decoder

Yacht Master

88 g50 slant should be north of $45K more if the 22K miles are documented.
Just of the top of my head I think 3000 were built, yes VIN will tell all.

220S

According to the PCA there's a quickie reference for spotting factory M505 (if it's a 1988 it's probably not dealer converted):

1) Wood rear vent slats
2) Dual oil cooler in rear vents with screens
3) Jack extensions extended factory welded to rockers
4) Factory stamped part number on rocker panels
5) Two piece rear vent hole
6) Exact die cuts in the corners of louvers

There's a long thread on Pelican Parts Technical BBS for the 930 S with lots of info that has VINs, option codes, pics for identifying things like the headlight motors, etc.. http://forums.pelicanparts.com/911-9...-flachbau.html

Pelican has a good 930 tech forum, btw.

As far as twin plugging goes, Porsche offset the plug from the cylinder's center which meant uneven burn so twin plugging gives it more efficient combustion. It's an expensive mod. But whether to twin plug depends on the increased boost you're planning to try to eventually get, etc.. If you are adding power the burn in the chamber needs to be better, so you TP. At the time, Porsche was mainly concerned with costs. If they had increased boost, they'd have to change the ignition system. But doing a twin ignition setup will definitely give you cleaner burning, more efficiency and less plug fouling.

DAGREEKNYC

thanks peeps !!!!!!!!!!!

slownrusty

Definitely join the Pelican Turbo Charging Forum. Alot of 930s were modified and sadly hacked over the years, many received after market slant nose conversions, some were beautifully done though.

The Factory conversions were extremely expensive.

I am betting this is a 4speed car, unless it has the super expensive G50 5 speed hydraulic conversion.

Any other mods done to the car? If it has twin plugs you are EXTREMELY luck not many owners could afford to do this, and the Twin cars have the best and more efficient burn as 220S stated....a sweet upgrade! I am betting it has an MSD box and an upgraded KKK turbo and intercooler.
Good luck.
Yasin

DAGREEKNYC

here is the doc from the car . I think it was a dealer conversion slant though . i will know more after i see the car .

DAGREEKNYC

factory 5 speed as per vin

220S

The VINs are pretty useless unfortunately. The trunk lid option sticker should say M505. Unfortunately they usually don't say 930 S on any docs, either. But on factory M505s it will normally say "Slant Nose Body Option" on a paid-for Porsche cert of authenticity.

There are lots of mutts out there. You'll have to look closely at it: rear vents, rocker extensions, etc.. Those jack extensions were welded at the factory and came with plugs.

It needs the M505 option code sticker and somewhere be a 930S (although the 930S designation didn't show anywhere sometimes.) Since yours is a '88, it has to have the M505 (it's after the special wishes SN cars) if it's a factory.

DAGREEKNYC

Ok , Car is a 930 with a dealer installed slant nose conversion and all OEM parts . Claim is they have all dealer bills and docs and if thats the case im ok with it .

Left a deposit and trekking it out friday to MD to checks it out , If all good will be trailering it back . Already reserved a trailer down there just in case .


THanks for all the help !

slownrusty

Something does not add up...factory 5 speed ONLY available in '89 on

Unless it has been converted at some point in the past 22 years by an owner with severely deep pockets, might be so as it is twin plugged (which is a high dollar conversion!).

or it has a 915 5 speed (pray it does not)

Yasin

rluvsbenz

1. The vin will not tell you if its factory Slope nose.
2. Yes, you can call PORSCHE USA in NJ and give them the vin to verify. Although the certificate of authenticity you posted show that info. I will attach a photo that actually has Slope nose option.
3. Dual spark engine for better combustion when increasing the HP on these cars.
4. The 5 speed is not a factory install until 1989 last production on the 911 production. Although I have driven modified 930's with these transmission and it's definitely update to an outdated 4spd.
1. The vin will not tell you if its factory Slope nose.
http://p-car.com/vin.html
2. Yes, you can call PORSCHE USA in NJ and give them the vin to verify. Although the certificate of authenticity you posted show that info. I will attach a photo that actually has Slope nose option.
3. Dual spark engine for better combustion when increasing the HP on these cars. Majority of these dual plug engines can produce 400+rwhp with only 2800 lbs to push.
4. The 5 speed is not a factory install until 1989 last production on the 911 production. Although I have driven modified 930's with these transmission and it's definitely update to an outdated 4spd.
5. The backside of the front trunk or underneath the carpeting you can find a sticker with the option codes listed. You can use this link to decode the options.
http://www.kindel.com/porsche/options.asp
Good luck in your purchase.

DAGREEKNYC

the title says 5 speed . i put in the vin on renntech.org site and thats how it came up .

jbrinkley

That doesn't add up, 1988 equals 4 speed. Like Yasin said, if it has a 5 speed 915, you don't want this car.

edit
then again, if this was a special wishes it's entirely possible there's a ruf 5 speed in there.
Some good pics of it would verify. The torsion tubes might not look different for a special 5 speed like they would for a g50 transplant.
do you have some pics of the car somewhere we could look at?

DAGREEKNYC

Hey i pm'ed you the mods you wanted to know about on the other site . Also here is what comes up VIA Scouser's vin decoder 3.3.

DAGREEKNYC

here are some pix

220S

Maybe it's the pic, but the washboard hood louvers look different. Why is the last one dark? (On the factory they also go from large to smaller.)

The other three pics you posted don't enlarge. Do you have any others?

+1 on the transmission issue.

Also the VIN decoder sometimes doesn't decode correctly. Is this a dealer sale or private?

ps., about your question on the starter: they are always on the left on all 911s ever made (NA and ROW) and still are.

slownrusty

Better quality and higher Res pics to truly be able to help. Also any interior and under hood shots?

I doubt it is a RUF 5speed in a factory car....very very doubtful.

I would be more inclined to a 915 but a slight chance it is a G50..

Feel like we are playing a game of Clue here...LOL

Yasin

DAGREEKNYC

Spoke to Sun porsche in Mechanicsville PA , About 40 miles down the road and they will do a PPI inspection and a compression test for 400 bucks . Its a now brainer IMO .

Lets see if owner goes for it . Will need to flat bed there but im picking up all costs .

slownrusty

You may know this, but just incase:
You need to see 140psi on compression
Leakdown in the 2% to 6% range

Warm or hot engine, throttle open

Yasin

Blacksport350

You have gotten some pretty good advice already. However, have someone take a close look at the fit between the hood, the fenders, and the bumper as it is not quite right. This points to a conversion, not a factory delivered slant.

The speed is also suspect so figure out WHICH 5 speed it actually has in it before you buy it.

Either way, good luck as it looks like a nice low mile example.

DAGREEKNYC

Im with you . After looking at more pics its confirmed that by the way the washboard vents look that they are aftermarket fenders . Furthermore the lights are individually motorized and not one unit under hood lock as per original .

Car needs paint and interior upgrades , especially seats . Heating module is shorted out on side of seat that controls temp adjustment . Washer fluid motor for front lights is burned out . No radio .

also asked for a tranny confirmation if a g50 or a 915 and still waiting for a reply .

In all honesty is the car worth 20 k ? Ill need 5k for paint 5k at least for factory fenders and god knows how much a true headlight motor assembly will run as well . interior upgrades im thinking maybe 2-3k .

So for this money can you get this car in a 8-10 condition??

Point2Point

Do you have your heart set on a slant nose? You'd have a much wider selection of cars if slant nose isn't a must. Personally, I prefer the looks of the regular 930.

slownrusty

Car sounds like a project...do you want a 930 project...needs paint AND interior...plus it is no longer a Factory or dealer slantnose?

I also prefer the look of a regular 930 over a Slant..is your heart set on a Slant?

Lots of sweet and well cared for cars for $5-$7K for money..thats what I would do.

Also the headlight mechanisms for a factory car...unobtanium prices!

Why does a car with 22K miles on it need a paint job and interior anyway? Something fishy here.

Still curious to see what the Compression and Leak down reveal.

Yasin