How about re installig the safety latch only. This would give you a secondary back up in case you forget the hood pins........and sooner or later you will forget it.

 

This is my friends car after forgetting to secure good pins

 

Second idea - Put the pins back into the posts when the hood is up.

I don't know how much damage potential is there if you close the hood with the pins still in place though.

 

...., or "old school" bonnet pins with dangly wires, least you,d see them hanging loose .


Ken
80 928 S
5 Speed

UK

 

Craig, you are an awesome guy. I dig your resto work too my friend. Thanks.

Me too Tony. It must be a blast!

Fred, awesome. I am already brimming with ideas! Black headlight bezels and that nose and hood scheme.

Not to seem nuts but this car IS a prototype, when all done in the next couple years I plan on repainting it in the same color but modern base-coat/clear-coat like it was previously. I prefer the high gloss and this gulf blue needs it to look good.
There is a reason everyone uses clearcoat. Live and learn as they say.

Good idea Shawn, I haven't forgotten about
your pumkin, sorry it has taken so long to get together.


Great logical idea. But that is most of what i removed for weight savings.


Winner. Anything that looks like a 935 is ok in my book Ken!

Ouch!

Great idea Joe, I will do this for now.

I almost forgot again tonight but remembered before i started it.


I was in Baltimore all day and must make the doors weather proof.

in the next few days.

Shark runs great.

 

FYI:

Cast iron manifolds total weight is: 23.5 lbs

'86 tube manifolds total weight is: 16 lbs

revised exhaust system after manifolds: 16 lbs.

Total revised RS exhaust system (one outlet) weight including rubber hanger 32. lbs

Total exhaust weight savings doing this (compared to what i had): 17 lbs

The interior of the tube manifolds is much bigger (about 3/10")

I measured and interior dia for the tube at 1.63"

and in the cast iron units 1.34"

I would guess there will be a performance increase but the weight savings over the cast iron is only 7.5 lbs.

Happy Father's Day men.

 

Every single lb. you remove on your car Matt is a GREAT thing.
And at the same time if you gain power, EVEN BETTER.

Very impressive job.
Keep up the good work.

 

I see you've got your welder up and running, and some practice with exhausts!

When can we get together on that pumpkin?

I'll definitely provide your poison of choice as a small token (I'm a bourbon guy, myself).

 

-17 lbs, plus BHP?

I have been wondering what power gains have been made. Most of you know that a supercharger can make a 50% gain but most USE 50 HP to make this gain. A supercharged car making 400 BHP is really making 450.

With only a single belt to my alternator i am curious to know what gain there is.

I will be taking it to a local shop with dyno soon..

Take care Bertrand, I hope your back is feeling better buddy.

Sounds like fun Shawn, we can get blasted in the garage!

Astrid and i are taking the Kids Sunday for a 4 day amusement park vaca as school ends this week.

But the following weekend we can get together.

I need your help too, i'd like to know who can restore my 25 year old Seiko Diver's watch my Dad gave me. It has gotten beaten up over the years but keeps perfect time.

Talk to you soon,

matt

 

Supercharging just by adding a blower without the concomitant change in C/R, and valve timing doesn't usually yield much usable power. The 928 has several kits available and they give pretty modest gains. Don't forget, the pump, belt guides, and all the hardware associated adds significant weight right up near the front as well.

I would suggest staying NA and working on the intake where big gains can potentially be had. I have turbo and supercharged a couple cars, and the only ones that seemed to gain are ones that went all the way down to the crankcase and changed a lot of the engine geometry.

Keep having fun out there!

 

Sounds like a plan. I have drill this coming weekend, but the following weekend is free.

I'd be hesitant to restore a working watch with some patina to it. Those scratches and such tell a story. But, yes, I can definitely hook you up with someone.

My car is going to look like such a sad lump next to yours..!

 

Hey Doc,

Thanks for the advice, i agree.

I am happy with the gains made through simplification.

Engine torque performed over a period of time (work) equals Power. HP=TQ x RPM / 5,252

The RS revs up quicker, i am sure power has been added over stock.

I would like your advice regarding intake improvements while you are here.

I haven't even advanced the ig timing. It is plenty quick for me (for now).

My crank pulley will remain as-is.


It's more than patina, it stopped an angle grinder once. welding also has ruined the crystals (on second) It looks horrible. Bezel looks like it has been left on the highway..

And Shawn bring your work gloves, i plan on watching you remove your exhaust for me to repair. I'm spent.

 

So, I stuck my foot in my mouth again. lol

I haven't worked much on the 83 with the L-jet. The typical work to get more air into the engine with less restriction is the game. I understand that the plenum, runners and throttle body of the Euro are bigger, and that makes more juice all by itself. After that, getting bigger injectors is the trick; http://www.928motorsports.com/parts/ljet_injectors.php. Beyond that is Euro cams, and if you want to go further, remove the heads, and tweak the intake ports to match the runners you have.

I think I'd try to find the intake goodies from a Euro, but that's gonna be hard. Maybe just the throttle body so you can get more air that way. The exhaust is bigger so time to work the intake where the air is running at low pressure.

 

Doc,

I did port a bit, smooth out and polish the Air Flow Meter, then adjust the barn door spring to open earlier and stay open giving the motor more fuel earlier i believe. It made a noticeable gain at the time. I noticed that it was the same AFM my '86 911 used, and i did this to it with nice gain also.

I do like where the US cams make their power for street driving,
I would guess the euro cams make more in the upper rev range though.

I am happy with it's performance it is a good bit lighter than stock. It even shifts better being lite. I noticed this with the 911 also, which had the same syncros..

I think i will eventually have my cams reground to euro specs and do the injectors when i want more power but i am plenty happy with the performance.

BTW Doc, I had it weighed with the interior done before the recent exhaust work,

it weighed only 2740 lbs at the time, now it is somewhere around 2720 lbs.

The monthly state calibrated scale operates in 20 lb. increments.

As i put the interior in i tidied up more unneeded wire, removed some more sound deadening and the air conditioning condenser was finally removed so things balanced out a bit as i added back the interior.

A rennlister is helping me with the exterior graphics, i will tune in with that in the near future.

 

I think you dun right. Amazing you could get it under 3000Lbs, and 2740 is unheard of. I might fly up to PA to pick up a plane next month, may see if I can stop by and check it out. Looks like tons of fun.