edc

The variance in cam deviation is often cited as a possible cause of IMS failure. Don't rule it out. 

20 minutes ago, Daboy3000 said:

This?
Don't know what that is.  Seatbelt/baby seat thing?

Not sure exactly of picture but there is a child seat airbag deactivation device that needs plugging in to work. 

1 hour ago, charlieboy2608 said:

Excuse my ignorance and I appreciate the rads are behind the front bumper but are there no fans near the mid location of the engine?

I'm sure I heard a fan behind me when struck in traffic. ..

There is a fan offside for blowing out hot air. The opposite side is air intake. But the cooling system fans are up front. 

He could hear the cooling fans and promptly points over his shoulder to the rear ... 

Good plug for Dean and team at La Rose / Eporsch. 

No markings and a poor fit, sounds like a counterfeit item. 

Tips bolt on and bolt off. 

2 hours ago, phazed said:

Having got the free flowing stainless swept manifolds, sports cat's and exhaust system fitted already.
I have a 987 airbox on the shelf to fit.
At this point, I suppose, I should go down the route of 987 manifolds, larger throttle body, Tee piece, and associated pipework.

In theory that would give me the most possible power without disturbing the engine itself.?

Did someone on this thread say they had some of these parts hanging around? If so, do they want to move it on?

My one concern would be if these upgrades just gave you a peak power output at the very top end but didn’t particularly do anything to the mid range torque.

Strangely after driving my 986 and 987 back to back, the 986 is definitely lacking in mid range torque although it fair sings at the top end! The most noticeable torque area is round the 2KRPM, which makes gentle, cruising around easy, the 987 (RS60) has that torque continuing, fairly linear like through the whole rev range.

I've posted my plots before but I got a little more from circa 3.5k rpm and the delta getting bigger through to 7k rpm. 

2 hours ago, ATM said:

The 981 uses cone filters. They're big and it has 2. One each side. This pic shows the size compared to some guy's hand

 

I'd wager the 987 air filter has more surface area than that single cone filter. You'd also not fit that easily in a 986 without leaving it exposed to sucking in hot air. 

1 hour ago, ½cwt said:

Checking the parts cat, the TB is the same, but the intake for build code M091 ('50 years Spyder') has a 987 part numbered intake pipe, MAF and air box.

Exactly and if you look back through the annals here @Berty987 was one of the first proponents of this mod on this forum and it was his at the time Planet-9 article that spawned these mods here. His was an early 987 and from recollection this has the "better" freer flowing manifolds compared to later 987 and he got up to circa 295bhp on the Dyno. 

My own 550 was not quite running quite right and is quite high mileage but still pulled circa 272bhp from I think just manifolds alone. If my memory is right it also had a loose spark plug on that run too. I'd speculate that with a slightly freer flowing exhaust and the TB it would be much closer albeit 987 also uses the 68mm throttle. The 987 intake manifold is quite different to the 986 so I expect some little ponies are in that too. 

3 hours ago, Patt said:

I am sure it was the same size as a standard 986, just the different joining tube to the plenum.  

Years ago we were going to put the larger TB onto EDC's 550, but he gave up trying to get the right "t-piece"

Apart from the pipe I still have all the bits in the garage despite moving house since! 

Is it going to take the heat? Why paint that section as it's up against the car? 

550 is regular 68mm throttle body, MAF has different placement further along the intake pipe and as @Patt says the intake pipe is more curved similar to 987. 

Equally others have done the throttle body on standard airbox and shown a small improvement. Years ago I was sceptical of the 987 airbox. But the 550 shows it makes a difference and those using it as a mod have shown it makes a difference too. The 987 filter is much larger than the 986. I think the other important thing for the cone type filter is that they are always marketed as "free flow". Are they actually and can they actually pass more air? The actual data will be different for different filters of course. 

For your last question of just adding the 987 airbox, this is in essence the 550 spec and it is rated for more power than a standard late 986S. 

On my old car I cut the bracket and you can then push the connector in from the rear by hand. Need a skim hand/wrist though as the wiring isn't that long so light needs to be part way in. 

I use the DS2500 on the road. I'd consider using the DS1.11 or DS Uno for regular track days if staying with Ferodo. 

4 hours ago, phazed said:

Exactly. My point being that these engines have little torque at the bottom end and need to be revved.

Little is all relative. I had an AMG 5.5 V8 and that was 400 bhp and 400lbsft. For sure see the real action is over 4k rpm. But compare to say a 3l BMW engine of the same era the M96 fares well. 

1 hour ago, Menoporsche said:

@map , @edc 

This old post of mine still seems to have a live link to my Dyno run overlays on one graph. 

https://www.BoXa.net/topic/53075-blue-boxster-s-with-18-sport-classics/?do=findComment&comment=685572

1 minute ago, edc said:

I think you're looking at the wrong axis. At 2k rpm it's making in the above standard graph circa 218 NM which is approx 160 Ibft. 

Correction the torque is the grey plot. 

31 minutes ago, phazed said:

Thanks for that.

Quite funny, at 2K RPM, the Porsche makes about 75 ft lb of torque. My last TVR, a 5.5 V8 produced 350 ft lb of torque at 2K RPM...

I think you're looking at the wrong axis. At 2k rpm it's making in the above standard graph circa 218 NM which is approx 160 Ibft. 

11 hours ago, smit572 said:

Hi do you use the Gummi Pflege Rubber Treatment or Rubber Care (or is it same thing) on amazon rubber treatment is around £12 for 500ml and rubber care is £5 for 50 ml 

 

Thanks

Most come in a bottle with a shoe polish style sponge applicator on the top. 

1 hour ago, Sanky said:

I’ll put one together, not difficult to do if you buy the seats with heating elements already fitted.

That may be why it's not as hot as you expect? Perhaps some are broken? 

16 minutes ago, phazed said:

How are you getting on with the Toyosports item?
Only done a couple of test drives with mine but will be doing a 40 mile round-trip on Tuesday, hopefully with the roof down, weather permitting and will know more on my return!

Roof down I found was 'quieter' and the resonance boom effect was reduced compared to roof up. 

If the decat pipes have an empty lambda boss you could put your lambda in. 

You could either get it mapped out or if memory is right if there is a sparenemoty boss out the lambda in and leave hanging in the air but tied out the way. I think this is what @Mark Shead did.