Weissach1982

I'm new to the Rennlist 928 Forum, I'm 16 and own a 1982 Weissach edition, I spend a lot of time working on my car. I've had it repainted at my father's Custom Car shop, which I did a good amount of work on it and mechanically. So bare with me because I'm learning the 928 language, considering i've put in a new dash, new injectors,S4 Wing, and had a modified exhaust installed with no cat(its illegal but i didn't say anything) and a Smithy glasspack,I'm sure some of you older guys have heard of that muffler. But its an awesome first car and i plan to do some more modifications when i get some more money. I've bought most of my parts from 928 Specialists and i'd like to thank them for helping out. My main goal has been to get 300hp out of my motor as did the European model 928S did, even though they had 4.7L motors that would be great if anyone could give me a hand on whats the best Engine tuning, and other performance tuning i could do to the 4.5L motor.Thanks

Old & New

Welcome to the board!

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Good luck!

Ted928

Weissach1982,

Congratulations on owning such a great car at such a young age.
This is totally off topic but I'll say it anyway.
My father gave me good advice when I was 16. "Learn to drive slowly and you'll have the rest of your life to learn to drive fast".

Have fun!!!

Weissach

I also had my first 928 when I was 16. Welcome to the club. First of all you need to know that you have a three speed auto. This makes the car VERY slow. I have several articles giving it the 0-60 between 8.1-8.4 and the 1/4 in the 16s. Even with 300hp, it won't make it into the high 14s. If you want to go somewhat faster, I would spend my time on the tranny. Make it a 5-speed or convert to a 4-speed auto from later years. I have had alot of 928s and the three speed autos have always felt down on power because of the tranny. So, don't spend any time on the engine until you fix that tranny problem.

John Struthers

Welcome,
1. Not to **** off Ed, this is not about street racing.
2. Again, due to so many query's on how to make
more HP, my earlier thoughts on valuation climbing quickly due to modifications, blown engines, drivetrains, and the ever present wreckage factor seem to hold some water.
Attrition of the fleet equals fewer numbers yielding higher inital cost for the remaining 928's. Weissach Bucks as a retirement? Hmmm...
3. My son Zack is heading toward 16. I already take him on long familiarization rides on a variety of Texas back roads. He drives.
This is to let you know that I and others believe a 16 year old other than yourself can handle a 928 Porsche. I reserve judgement on Euro's, Club Sports, and anything in the 5.0L and above range.
You, and others, might argue there is little difference between a mistake at 140mph or 160 plus mph.
Mass and velocity beg to differ, and if the capability is there I have no doubt that somewhere/sometime it will be used.
Having said that, let's get to the HP issues.
First, the tranny! that 4 spd auto may help your times a bit thru the 1/4, not sure about the 0-60 because you can't lock the puppy in 1st as on the 3 spd. Consider, you ARE keeping the 4.5L, right?
You might want Steve C. to give you some advise on the swap, but, from what I understand you will have a shift point mapping problem. Unsure if there is a mount, and T/C mating/mount conflict.
Same for axles. There appears to be a differrence on replacement axle parts which might only reflect an up grade - toss in brakes here- or a change specific to later model 4spd transmissions and Torque Converters. Now back to that mapping... there is no chip swap for the Weissach that I am aware of. So you either swap computers or go to after market programable/piggyback engine management. Not cheap. ASK the GURU's, and The BIG THREE to be sure of what goes with what should there be a conflict, O.K.?
I am sure your top end and 1/4 times will improve if that's what you are after. Mine, on two occassions only, ran out of gear before the engine considered anything other than PULLING.
The engine: pipes, headers, head work, new plugs, wires cap, rotor, coil, advance tinkering, rebuild and matching the injectors. These might give you 20 to 45 HP more than you have now. Not more than rated as the injector work, coil, plugs, wires, cap/rotor will just give you back what was supposed to be there in the first place, follow?
So for an extensive tune-up: wires, coil, cap, rotor, injectors, and tinkering with the advance I'll be optimistic and say a "gain" of 25 hp over what you actually have now. If the 4.5L is making 220 HP I'd be happy. So if you gain -back- 25HP that's a 8-9 percent HP jump.
Any, gains after this re-arrange your life by way of finances.
MSDS headers - $595.00
Pipes, High-Flo Cat, Muffler(s) - $400.00 plus
Single pipe not duals.
Euro heads, used, each - $500.00
Heads not complete.
Euro cams, used,each $650.00
I'm not sure if the auto trans 3spd or 4spd is computer mapped for the Euro engines, anyone know?
Weren't they all 5spd manuals like the Club Sports? It do get complicated.
I don't know if you have to change engine dampners with that tranny swap or not, but the 83 thru 91 dampner is $650. new, $300. used. 83' A/T flywheel is different than the 82' another $300. new, $150. used. That 4spd auto is $1000. used, and $2000. re-built.
Nitrous? Turbo? Super-Charger?
Stop it yer' killin' me... hardy har har!
If you have the bucks for this...$300.00 - $600.00
just for the tune-up (could go higher), $4700 for the exhaust, Euro and 4spd stuff that's way on the low side, I have one question, if not, one suggestion.
The question is; Do you have a sister I can marry?
The suggestion: That $5000. would be better spent toward a 86.5 or newer 928 with the HP built in.
BTW I have had to 'hush' my Weissach quite a bit since the Muffler Maniacs original system was put on- NASCAR!!!-, yeah the old 4.5 still sounds hot but, you and I are both showing up to a gun fight with a knife. Better to be a sleeper...trust me.
Last, but not least, don't get into it on the street. Aside from calamities of Biblical proportions, you can't enjoy your 928 Weissach as a babe magnet - Christ! To be 16 and own a freshly painted Weissach 928, it boggles the mind- if you don't have a license.
HTH


John S. 82 Weissach, Auto., "Pattycakes"

Dozman

1982,

I have an auto trans out of an '85 shark I could let go for say $200.00. Includes torque converter,what the heck I'll let the rear end go with it for $250.00.

John D

Weissach

As you can see, this gets expensive FAST. It would be a shame to throw all that money and time on your engine and still have a very slow car. The tranny would be first on my list. Good luck.

PorKen

It will be tough to squeeze 300 ponies out of your engine, easily. I've had some luck with my 81 (same engine) giving it some go-power. One easier starting point is weight. Removing unused/unnecessary parts makes for cheap hp, and makes the car much, much easier to service yourself.

No need for chips, these L-jet cars are only partly black-box; you can adjust the timing manually, even tune the mixture by grounding the oxygen sensor wire and adjusting the AFM.

When I have time I'll make a member page with more specifics, but see my post in the link below for my attempts so far.
<a href="http://forums.rennlist.com/forums/ultimatebb.php?ubb=get_topic&f=14&t=004173" target="_blank">Link: What repairs have you done this year?</a>

<img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />

Weissach1982

Thanks guys, i've been needing some help from other people. 300hp seems a little hard to squeeze out of my motor. I did have the MSDS headers orderd at one point in time..but it was takin forever. ordered them in august of 2002 and they didn't arrive near the time i needed them which was around early late November. I dont' know if thats too short to wait or what. plus i needed the money. I have been doing a bit of reasearch on the supercharging for the 4.5L motor. It seems its one of the more difficult engines to put superchargers on. Although i've looked at "QuickCarl" website about his euro 928 4.5 that has a powerdyne supercharger on it. Sounds expensive...but the 4spd transmission is an idea..although i've heard that converting an auto to manual is difficult and costly. Would that be the same with the 4spd and how hard is it to change the rear end in these cars..being that the tranny is in the back?
thanks

Jim Nowak

Weissach1982,

What is the name of your dad's shop in P'cola?

Weissach1982

Alley Cat Customs, Pensacola Florida

Dozman

1982,

Sorry, Someone here made off with the trans before I could even get back on the board. The trans has been sold. I think somone did get a deal on this.

Enjoy your day.

John D

Jim Nowak

Weissach1982,

I checked the phone book and directory assistance but I couldn't find your fathers place in P'cola. Could it be under a different name? There are not many custom car places in P'cola. I work in South Alabama and the Florida Panhandle and would like to swing by see what kind of work he does. Maybe a street address and directions from a main road?

Weissach1982

The garage is located behind our house, its a 4 bay garage with two for workin on mechanical, and storing cars at times..and the other two were made into a paint booth. We're a pretty big car family..we have 3 porsches includin my 928, a 1965 356 C coupe, and a 1974 911 with S cams. And a 1978 Ferrari 308GT4, Also a 1950 Mercury. My mom drives a 91 Lotus Elan SE, its for sale if there are any takers. The street address is listed under Gerald Davis. So if you find the number and address give us a call. Be more than welcome to have you stop by.

Jim Nowak

Is this your dads email address GDavis3737@aol.com? You dad has a brown 74 911, platinum 928, and a red 914? The internet is a scary thing huh? <a href="http://son.pca.org/" target="_blank">http://son.pca.org/</a>

You need to go by Harry William's imports and ask him who to talk to on modifying your 928. I'm sure your dad has his number memorized by heart. He should be able to give you a few pointers or at least tell you who to talk to locally about modding a 928.