924Board.org

Guest · Posted: Mon Feb 14, 2000 10:21 pm Post subject:

From: Kevin Fraser
Email: frazzled@mypad.com
Date: 2/14/00
Time: 11:21:55 PM

Hi all,

The Snow is still coming down here in Canada, so I have plenty of time to contemplate mods to my recently purchased 1980 924. Been reading through the site and here's what I'm thinking of doing - please tell me what you think - good or bad.

Exhaust - my current exhaust is near falling apart so my plan:
1. install Bursch headers
2. remove cat - in Ontario, 20 year old cars don't need to pass emissions test.
3. install stock 944 muffler - straight pipe back to Bursch headers
Shouldn't there be some HP gain just by losing the cat?

Ignition - my plug wires are looking ratty and I found some used/cheap Nology "hot wires." So then I figured why not fix up whole thing. My plan:
1. replace Bosch coil with Nology "pro fire"
2. install "Ignitor" system into distributor
3. install Nology "hot wires"
Any plug suggestions? Do these kind of mods work or just a gimmick?

Engine - seems to be no leaks, maybe a little black smoke but I'd like to get it working to max efficiency. The plan here:
1. replace pistons with Euro 7:3:1 pistons
2. replace head cover with 931 version
3. Webcam camshaft - any recommendations for grind? or maybe another style (Integral Cam or EBS)
This may wait till next winter - seems like big $ but sounds like it is what will make the most difference.

Along with the above, I've found a 2nd hand Neuspeed throttle and I'll modify the air box.

Is this going on the right track or a total waste of money? I think I'm follow the suggestions made at the site - but I'm not an auto mechanics whiz so I may have screwed some ideas up. Also, I'm not a total speed freak - I'd just like to get the most I can from the car.

Thanks
Kev

Guest · Posted: Tue Feb 15, 2000 8:30 am Post subject:

From: Vaughan
Email: vscott39@hotmail.com
Date: 2/15/00
Time: 9:30:20 AM

As far as performance improvements, the only ones you mention which can actually help are:
Euro pistons (I'm assuming the 7.3:1 was a typo, and you actually mean 9.3:1, which is the actual Euro CR)
performance camshaft
the proper header and no cat might help a little too

The rest - TB, wires and plugs - won't really help much of anything except reliability. However, I personally recommend Bosch or NGK plugs, and Magnecor wires... the latter guaranteed for life, and extremely high quality. Sorry, I think Nology's are a gimmick. See www.magnecor.com for details. The serious racers (road racing) I know run Magnecors, and I run them, so... hey, your money, draw your own conclusions, we won't be offended :)

Vaughan

Guest · Posted: Tue Feb 15, 2000 1:30 pm Post subject:

From: Kevin Fraser
Email: frazzled@mypad.com
Date: 2/15/00
Time: 2:30:08 PM

thanks Vaughan,

Yes I did mean 9:3:1 pistons. I'm not married to nology and I so far only have the used wires so I'll check out the magnacore info.

kev

Guest · Posted: Wed Feb 16, 2000 4:35 pm Post subject:

From: Brad Wright
Email: wrightbr@kos.net
Date: 16 Feb 2000
Time: 17:35:55

I think wires are something that you should by new, and my choice
is the magnacor ( but hey it's your car). The exhaust will help, but
the car will get alought noisier by deleting the cat. You mentioned
that you were going to rebuild the motor, If it runs good and you don't
think you need the extra speed, just drive it for a year then you will
know what you want after a summer behind the wheel.

Guest · Posted: Wed Feb 16, 2000 7:37 pm Post subject:

From: Brad Wright
Email: wrightbr@kos.net
Date: 16 Feb 2000
Time: 20:37:25

You will notice changing the exhaust on your 924, deleting the cat
makes a difference (also in noise levels, it's alought loader). As far as
wires, thats something that I would buy new not used. My personal
choice would be the Magnecor, but hey it's your car buy what you
like!! If your car runs good, and you don't think that you need the extra
power, drive it for a year and get the feel of a Porsche!!!!!

Guest · Posted: Wed Feb 16, 2000 7:37 pm Post subject:

From: Brad Wright
Email: wrightbr@kos.net
Date: 16 Feb 2000
Time: 20:37:43

You will notice changing the exhaust on your 924, deleting the cat
makes a difference (also in noise levels, it's alought loader). As far as
wires, thats something that I would buy new not used. My personal
choice would be the Magnecor, but hey it's your car buy what you
like!! If your car runs good, and you don't think that you need the extra
power, drive it for a year and get the feel of a Porsche!!!!!

Guest · Posted: Fri Feb 18, 2000 2:21 pm Post subject:

From: DEREK BOWMAN
Email: derek.bowman
Date: 18 Feb 2000
Time: 15:21:58

euro pistons and head job 9.3.1 are your next step
flow test the head and have a cam machined to the gas flow,extractor c/w fully wrapped exhaust heat tape will increase the gas flow,full bore exhaust say 2" with coby exhaust.The next step is a adjustable cam this will allow you to adjust your engine at both ends ie low down rev for quick acceleration or top end for road speed.I run 45DCOE weber carbs as well not to much HP gain but
sound great when sucking all the air and fuel in.
Use Redline race oil you will gain some extra PSI
in your oil system which will help when pushing the engine to the limit.To gain compresson your can plan the block and fit special cast race pistons flat top type be aware of the piston to valve clearance.We hope to get the compresson up to 10.1 good luck as we say in New Zealand at the race track "GO HARD OR GO HOME"

Guest · Posted: Sat Feb 19, 2000 7:31 pm Post subject:

From: ralph
Email:
Date: 19 Feb 2000
Time: 20:31:14

There are some old European car issues devoted to
beefing up the 924s they had very little luck granted
they were using a 77 924 which had slightly less power
it seems that no matter what you try to bolt on is in vain
I have also experienced this problem the said it was
like putting two funnels on a straw they finally they
were able to out perform a turbo but that required
DCOE carbs. but dont lose hart recently went to sebring
where I saw NA 924 (race car of corse) with about 220 HP
this car screamed

Guest · Posted: Sun Feb 20, 2000 9:24 pm Post subject:

From: wayne
Email: spkprobe@aol.com
Date: 20 Feb 2000
Time: 22:24:55

Purchase a bursch header and exhaust system or the header and a 944 ear section which can be modified to fit.replace stock throttle body with newer version from a golf or jetta 2. Replace camshaft with one from web cam or from integral cams. open up snorkel on air box. ( webers are not needed unlee you want to make more than 160 hp. you can increase compression by decking block( take 20 thou.) or purchase pistons for 400.00 get 9.7:1 anything highier you will have to get a proper ignition system. or just purchase a 944 instead. and save some money

Guest · Posted: Wed Mar 01, 2000 10:22 pm Post subject:

From: Chris C.
Email: ccole4@neo.rr.com
Date: 01 Mar 2000
Time: 23:22:40

Have to disagree on one point of the last post. I would not Plain the block. This will throw of the valve timing by making the distance between the cam and crank. You will loose more horsepower because of timing than the power you gain by compression