Upgerades for a 2.7 S

[jm993rs]

helow I have a new car in my collection one 911 2.7 S year 74.

i would dissmount complet and i would paint and i would make the combination of classic car and sport car .

what's upgerades can i make ??? pass to pass. Brakes , Admision fuel and air. whats tree of valves ar best in this car ????? wheels numbers ????


i never have a classic porsche and no have idea .


thanks for your answers and sorry for my english is very little .

[christojen]

Hi,

It is quite difficult to understand exactly what you are asking, but i would suggest that you read the frequently asked questions (FAQ) section and also search on this site for specific answers.

Good luck with the new car.

Chris

[Flieger]

Are you planning on a full restoration? Do you "want" to or "would you like" to do this. It is hard to tell from the voice of the verbs in your first sentence.

If you will be doing a full tear-down and build-up, you can go much farther in upgrades.

The most important things for reliability are the 11 blade fan, getting rid of the thermal reactor exhaust, and adding a "pop-off valve" for the CIS airbox. Then go through and refresh the brake lines and fluid, shifter bushings, etc. These are easy things for reliablity/safety.

Performance-wise, the stock brakes are good already. Engine, there is not much you can do while keeping CIS. Carburetors opens the door for new cams, valves, rods, pistons, etc for higher compression and higher revs so more power.

[HarryD]

Hi:

Welcome to the best 911 BBS.

Is this a Euro (non US Import) 911?

If this is already your car, can you post some pictures of the engine room and interior?

As far as upgrades, depending on what you want, and how much you are willing to spend, there are losts of ways to go. For most people new to 911 ownership, I suggest get your car running in stock condition and then figure out where you want to go. If you are wanting to to use it as a track car, unless you already have extensive track experience, your best investments are high performance drivers schools and track time. The car, as built is very capable.

Welcome.

Ask away!

[Steve@Rennsport]

Originally Posted by Flieger

The most important things for reliability are the 11 blade fan, getting rid of the thermal reactor exhaust, and adding a "pop-off valve" for the CIS airbox.

The '74 cars always had 11-blade fans and never had thermal reactors in any market. These had the same exhaust as the earlier cars.

With their light weight and no emissions equipment, this is why this year was unique and desirable,....

[Tom '74 911]

I'm with Steve (and admittedly quite biased!) '74 was/is a great year! I love the chrome windows and headlight rings.

How far you go w/your rebuild will be determined by your vision for the car and especially your budget.

Feel free to ask lots of questions here. There are many knowledgeable folks who offer great advice and council.

[Daviboy]

jm993rs if that is the car in the picture I would do nothing to it looks absolutely beautiful to me.

[super9064]

If the car is in good running condition, I recommend that you just drive and enjoy the car as is. I think you will find that to repaint the car, and to rebuild the motor, for more performance will cost twice what you paid for the car. I would put my money in maintaining the car, replacing worn items like brakes, suspension bushings, shock absorbers. You will find there is plenty to spend money on.

Welcome, and good luck.

[RWebb]

1974 is an excellent "sleeper" year because most people THINK it had all the later nasty U.S. emissions equipment but it did not, as Steve points out. In fact, IIRC, he owns one. It sill has the lugubrious CIS (K-Jetronic) fuel injection system however.

If I bought one, I would eliminate the heavy bumper shocks (on US versions). Even if it had the European crush tubes, I would STILL dump the bumpers and "back date" it to look like the earlier cars using fiberglass or carbon fiber parts of HIGH Quality.

IIRC, by '74 the stock seats were already the lighter versions without any horsehair so you may be ok there.

I would replace steel rear rear banana arms with Aluminum ones (or did the '74s already have Al?)

I would eliminate the CIS and either put on carbs or an electronic aftermarket fuel injection system.

I'd replace the nasty old hard, broken down rubber suspension bushings with the Elephant polybronze bushings.

Other than that, I would just be willing to fix all the things that always need replacement on an old car: brake hoses, transmission parts, etc.

So I would head for more power, better looks and lower weight for the motor to push around. It is not cheap to do this, so your dream may be costly.

Post any specific questions you have and tell us what version car it is or give the VIN

[911st]

Full 73RSR or 74 IROC lt wt conversion with a 2.9 MFI twin plug dizy motor!

Send a set of 16x7" rims out to widen to 9&10" to the outside for a proper look and run Kumho 245/265's.

A tribute RSR.

JMO

[Steve@Rennsport]

Originally Posted by 911st

Full 73RSR or 74 IROC lt wt conversion with a 2.9 MFI twin plug dizy motor!

Send a set of 16x7" rims out to widen to 9&10" to the outside for a proper look and run Kumho 245/265's.

A tribute RSR.

JMO

Make that a 2.8 and you'll have something,....

[stlrj]

I have a black 74 that looks a lot like the one pictured. I left the ride height alone...factory stock, added SC flares in the rear, eliminated the exploding airbox issue with an 86 3.2 transplant and now have my ultimate sleeper.

Cheers,

Joe

[jm993rs]

I buy this car but the car have 55000.km and the engine is new, the gearbox is perfect and is a car to have more years but his engine is new.

Now i would make the transformation two years down 72,73 and the car is february of 75. but no would make rsr or st or rs , i would mantein 911 s .

but I´M 30 years old and would make one racing 911 S .

please put in the post pics of racing transformations of 72 73 911 S

the little problem of this car is the paintbody of the car now is green, firts is red and firts to firts in years 75 76 77 this car is orange
and my work is body car painting

the firts steep is down the suspension and buy four fuchs wheels. and i would make more sound exhaust ¿ in wich tube size can I make modification for the sound ?

[tof2.7]

2,7 of 1974 is a wonderful car, see my website special for 2,7 of 1974 to 1977 and so you can see my beauty and all the member car

http://www.2l7registry.com

[Fidalgo911S]

Based on the front bumper turn signals and rear turnsignals, your '74 looks like a Euro delivery.

The suspension set-up on the '74S is great. Your brakes should be alloy S-calipers on all corners. The '74S had either Bilsteins or Koni's, 20mm sway bar in front and 18mm in the rear. The trailing arms are Al.

I think the CIS is a great system. Unless you have a few thousand euros just lying around to make the change to something else, leave it alone.

Any upgrades I would do would be a re-fresh of all wear-and-tear parts.

I would consider it a rare car too; with only ~1,300 coupes made, there's not many left.

[frankc]

Originally Posted by Fidalgo911S

Your brakes should be alloy S-calipers on all corners.

Alum S-calipers up front, yes. But I thought std steel M calipers in the rear. I don't know of any alum rear calipers used in this era (on a non-turbo). If there are some I'd be interested in finding a pair .

Frank

[carrera turbo]

cool looking car .

i would lower the front and just drive this thing. if you have never owned a Porsche before. get to know the car before you tear into it. from experience in owning several of these. some of my favorite projects have been the ones i drove as running projects you really get to feel what all the small changes to suspension and brakes do. plus there is a lot less chance you will get in over your head if you do it in stages.
but either way welcome aboard and enjoy the great people on this board.

P.S. i think there is a translator on google that will help us understand you.

cheers ed

[Flieger]

Originally Posted by jm993rs

I buy this car but the car have 55000.km and the engine is new, the gearbox is perfect and is a car to have more years but his engine is new.

Now i would make the transformation two years down 72,73 and the car is february of 75. but no would make rsr or st or rs , i would mantein 911 s .

but I´M 30 years old and would make one racing 911 S .

please put in the post pics of racing transformations of 72 73 911 S

the little problem of this car is the paintbody of the car now is green, firts is red and firts to firts in years 75 76 77 this car is orange
and my work is body car painting.

the firts steep is down the suspension and buy four fuchs wheels. and i would make more sound exhaust ¿ in wich tube size can I make modification for the sound ?

[jm993rs]

now a little late and the big work start !!!!!

firts I ride in a classic races to test how everything worked.

911 2.7 '75

I have the engine outside and I think the gearbox have a closed and locking relationship and a very lightweight flywheel. and have the question ??

where can buy ?? for a 915 gearbox,

[AshEvan]

Nice to see the true quality attributes of the 74 model being recognized by some of our resident Pelican experts on the board. Yes, I am biased, but I believe 74 was a significantmodel year just as 69 was in 911 developemnt. True some of the later Mid Ydear 911's did have their challenges, but most have been resolved by their original or current caretakers.