K & N Induction on Turbo

[Guest]

I have a friend who's not a member of the club who has a series 1 924 turbo. He was wondering is there any benefit of him using a K&N 57i induction kit on the car. Is it worth the money or should he stick with the original set up?

Also on the back of the air box the is a small pipe (Approx 15mm) that goes into small black cylinder is this an oil breather pipe and filter, if he goes with the kit should he remove the cylinder and replace with a valve filter?

Cheers

Baz

 

[924nutter]

According to PET the canister, i.e. the purolator one, is an oil separator which allows sump ventilation and lets the oil drawn up separtate, and run back into the sump. As to the filter one pays ones money..... A K& N made a difference on my 924 lux so there is no reason why the K& N should not confer some benfit to the turbo. Whether a 25 year old engine would take to being opened up further than the god of Porshces originally intened very long before expiring is up to the owner to decide. If the standard air filter can reach 10psi whereupon it is controlled by the wastegate where is all the extra air that's sucked in going to go? Just a thought. Your friend may find benfits in reduced lag, but as the inlet turbine has access to better air flow it will be trying to move more air so I would have thought that would slow down the rate at which the turbo would spool up. Any one else any thoughts/experience?

 

[rajagger]

Hello Baz - Rosh here. Nice to see you!!!!

 

[Guest]

What else can be done to release some horses?

 

[924nutter]

Source a carrera GT intercooler, (good luck with that) wind the boost up to 0.8 bar. The CGT does have a hybrid turbo with, I think, the compressor from a 930, but expect something around 200 horses. The CGT uses the same cam profile and timing but the material is different. A clear chill casting or something. I'm guessing, but that could be for durability under race conditions.

 

[937carrera]

It's a series 1 turbo so the CGT intercooler will not fit because of the different shape of the throttle body, it's oval rather than round on the series 1.

Having said that, my CGT replica (for sale) has had a genuine intercooler modified to fit the series 1 throttle body. I have no idea how they did it, it's almost as if they have been able to warp the casting.

 

[924nutter]

Could he not change the throttle body. Another £150 on the price of an intercooler wont make much of a dent. I once saw an intercooler up for £5000 on Ebay, or was it $5000. Either way a lot of dough.

 

[937carrera]

Yes, I don't see why that wouldn't be possible, there'll be other work on the pipework, fittings & intercooler mounts as well. £5,000 for an intercooler eh, well they are like rocking horse do doo. I have a complete car available for much less than that.