Windscreen wiper blades

[kevinl]

This is a problem I have always had and yes, I accept it is perhaps one of the 'charms' of a 964, but I cannot see particularly well in the rain.

I have tried replacing blades on a regular basis, even put on a little aero wing on the driver side arm which helped but it kept twisting and marked the screen. Things did improve after having the screen replaced but they are still not great. I now have double spring arms but these haven't helped.

I once tried the new aero blades as supplied on many new cars now but they were no good either. I'm back to standard 13" blades.

The biggest problem is that I get an area about 4" wide and 2" high where the blade lifts off the screen and this happens to be smack in my line of sight, so quite scary at night in the rain.

Has anyone had similar problems they have solved?

Rgds,
Kevin.

 

[jdpef356]

Rainex could well be you answer[]

http://www.theultimatefinish.co.uk/rain-x.aspx?gclid=CO_irICMsq0CFSFItAodW1EX1A

 

[chrishak]

It sounds like you have a problem somewhere...the wiper system on my 3.2 Carrera is even worse than that on a 964 (e.g. single spring arms), but I don't tend to suffer from lift off. When replacing the blades, do you replace the complete unit or just the rubbers? Are you using genuine Porsche blades? Porsche blade carriers have a reputation for following the curve of the screen better than aftermarket items.

 

[Lancerlot]

I've used Rainex but personally don't like it as I found it smears.

Most wiper problems stem from a build up of traffic film allowing the blade to "skip" across the glass surface. Hence an improvement when the new screen was fitted.

So thoroughly cleaning the windscreen surface may resolve a lot of the problems.

There are many bespoke cleaners on the market, but I use white vinegar, myself. Newspaper makes a good smear-free cloth for this purpose. News of the World was commonly recognised as best - but, rather inconsiderately, Murdoch no longer publishes this - perhaps the Daily Star would be a suitable alternative but I have yet to try this myself! []

Don't forget to clean the blades as well as the screen. Bosche blades are often thought to be some of the best available, although I know some swear by Piaa Silicone. There's a review of wiper blades here where Valeo seems to come out the best.

Regards,

Clive

 

[Melv]

Use double spring 993 wipers

 

[kevin]

ORIGINAL: Melv

Use double spring 993 wipers

They help Melv, but I still find using the Gtechniq G1 or G3 helps a lot, above about 50, no need for wipers anymore, all the rain simply flys off.

Kevin

 

[Melv]

I just pray for dry track days!![]

 

[colin129]

ORIGINAL: kevinl

This is a problem I have always had and yes, I accept it is perhaps one of the 'charms' of a 964, but I cannot see particularly well in the rain.

I have tried replacing blades on a regular basis, even put on a little aero wing on the driver side arm which helped but it kept twisting and marked the screen. Things did improve after having the screen replaced but they are still not great. I now have double spring arms but these haven't helped.

I once tried the new aero blades as supplied on many new cars now but they were no good either. I'm back to standard 13" blades.

The biggest problem is that I get an area about 4" wide and 2" high where the blade lifts off the screen and this happens to be smack in my line of sight, so quite scary at night in the rain.

Has anyone had similar problems they have solved?

Rgds,
Kevin.

I had exactly the same problem as you, right in my line of vision.

Since I had the screen out to repair the surround it has been much better, although that seems a bit drastic...[&:]

ORIGINAL: chrishak

It sounds like you have a problem somewhere...the wiper system on my 3.2 Carrera is even worse than that on a 964 (e.g. single spring arms), but I don't tend to suffer from lift off. When replacing the blades, do you replace the complete unit or just the rubbers? Are you using genuine Porsche blades? Porsche blade carriers have a reputation for following the curve of the screen better than aftermarket items.

My mates 3.2 does not have any trouble with his wipers at all.

 

[Steve Brookes]

ORIGINAL: kevinl

I have tried replacing blades on a regular basis, even put on a little aero wing on the driver side arm which helped but it kept twisting and marked the screen. Things did improve after having the screen replaced but they are still not great. I now have double spring arms but these haven't helped.

I found that moving to the later double spring arms made the wiping better (but still not particularly good compared to more modern cars). However, I don't get that unwiped patch you mention which makes me wonder if you got the correct part numbers because one of the arms is used for both RHD and LHD but the other one is specific to RHD or LHD? The part numbers for a RHD car are; 964 628 028 01 and 964 628 028 03.

 

[kevinl]

I always replace the whole blade, not just the rubber. In the past I did use Porsche original and whilst the whole screen cleared it still wasn't great, however, that I always put down to the screen being very badly pitted. It was like over spray across the whole screen and the screen had the blade paths etched into the glass!

2-3 years ago I had to have the screen replaced due to a big crack that appear down the bottom right. I obviously replaced blades at the same time but not Porsche originals.

I think my first port of call is to get original blades, it is only on the drivers side I get the problem and have tried switching the blades around but get exactly the same. This could point to chrishak's comment about original tracking better.

Rgds,
Kevin.

 

[Steve Brookes]

ORIGINAL: kevinl

I think my first port of call is to get original blades, it is only on the drivers side I get the problem and have tried switching the blades around but get exactly the same. This could point to chrishak's comment about original tracking better.

If you mean you tried the Bosch whole blades, I also found them pretty poor even with the double spring arms. The Porsche original blades are better.

 

[Alexander_Drobik]

I was told a few years back that the Porsche blades are more curved then the Bosch fitment for the 964. The best you can do is a new set of Porsche part numbered ones every 2 years, and have the 993 double spring units. And a good cleanser in the washer bottle. I tried Rainex (and a few others) and sometimes they worked ok but in the end the smaller blades, highly curved windscreen, and typical 911 front shape makes it a bit of a pain in smeary rain. I guess it is why there are 3 speed settings! The engineers tried to fix this but having the fastest wiper action I have seen.

 

[Melv]

Takes me back to my C4 days -great fun in the wet, but could see b*gger all at night, especially when it was raining!!!

 

[davepaul993]

ive used rainex on all my cars brill stuff try it !

 

[kevin]

ORIGINAL: davepaul993

ive used rainex on all my cars brill stuff try it !

Rainex is really old hat, and in comparison to Nanolex or GTechniq not even worth the effort.

What really has me surprised is that no-one here has even bothered to try these new products, the G1 on my Audi lasts for about a year, ever get that performance from Rainex? thought not. Time to move on I feel.

Kevin

 

[kevinl]

It is Bosch blades I've used up until now, mainly because they are the most readily available. I'll have to check if it was 964 or 993 part numbers for the double spring wiper arms I have and I'll visit PC East London to get some original blades.

I'll report back sometime when I've had a chance to sort it all out and have tested.

Thanks everyone for your input, it turned out to be quite a discussion!

 

[Steve Brookes]

I'd be interested to hear if 993 arms actually fit a 964? The wipers on a 993 are a different arrangement where the motors are close together in the centre of the scuttle panel. Both blades are much longer than a 964 and essentially sweep the whole of the screen together. The 964 motors are spaced much further apart and have smaller blades and give a more conventional sweep of the screen. At the moment I'm struggling to work out how the the longer arms/blades would work on a 964 because of the different spacing of the motors. [&:]

 

[T911UK]

The Porsche oringinal baldes are SWF and do bend more than Bosch ones and tend to work better

993 wiper arma are £111 each, 964 ones £28 each, cant see why you would fit 993 ones either

 

[ray stobbs]

common guys its a 20 year old car curved screen and good looks if you go back anuther 20 years it would be hand out of window job is this not the resone we loveem trouble is we know how good modern cars are

 

[kevinl]

Totally agree Ray but it's more than a tad inconvenient having the blade lift off the screen. Kind of prevents me seeing anything at times, which I know is not how it would have been designed. Anyhow, East London have the correct blades reserved for me to collect this afternoon. I'll have a chat with them about the arms whilst I'm there.