Have had a great day all day today on my Z! :D Completly removed my viscouse fan cause it saps power and fitted a nice big Kenlow 16" er which was an absolute bitch to bitch having to take the rad out but it's well on there now!! Then had to remove my oil cooler cause it's a UK Spec car, standard electric fan just to get to the original recirc valves to remove them!!!

 

They we're a bitch in them selves, easy to remove but then trying to bung up the recirc pipes was a nightmare!! The top hose requires a 28mm bung and the bottoms 32" :headvswal thats the bloody japanese for ya!!! Then I spent the afternoon chopping up the intake pipes to fit my new baily venturi dump valves!!! Put it all back together and it all worked first time!!!

 

Just a quick question though i've disconnected the vaccume pipe from the original recirc valves completly as I feel there know longer needed and have connected the vaccume pipe from the baily ones in it's place.. Are they used for anything else?? :confused:

 

PS By the way got the car dynoed befor and after viscouse fan removal and for those that need to know when the viscouse engaged it saps a wopping 18.3 BHP!!! The electric kenlow only sapps 0.4Bph as i guess the alternator has to do some work!!! Good upgrade :D

Then on the second run to ensure full viscous engagement and the easiest way to do this was to have the rolling road fan switched off so there was no air flow going to the car so it was well hot when doing a dyno run then we took the second reading which was down 18.3 on the first.

 

Im definatly tempted by this mod now...although one thing is confusing me...would'nt the reason for this power drop, be down to the lack of Intercooler/intake cooling with the Rolling road fans switched off ? or have I misunderstood something ?

I see how you simulate it now. Its an interesting result but that 18bhp loss you measure would not necessarily happen on the open road when you have max cooling air through the rad anyway by virtue of air speed. The fan doesnt do anything after about 30mph airspeed. I would doubt the Kenlowe would kick in either after 30mph either. You'll find it only comes in in traffic.

 

I would also think your power output could be well down on that test not only due to the fan drag locked up at 6500rpm but also partly due to the intercoolers now being roasted due to no cooling airflow through them. Hot intake air means reduced volumetric efficiency and a power drop. Think you would also be at risk of going to safety boost as det could have been brought on by hot boost air.

Im definatly tempted by this mod now...although one thing is confusing me...would'nt the reason for this power drop, be down to the lack of Intercooler/intake cooling with the Rolling road fans switched off ? or have I misunderstood something ?

 

No, forgot to mention sort off took that into consideration by sticking 2 little 9" Pifco fans just in front of the intercoolers just to give them a bit of air flow!!! ;) Your right though the IC's still arn't gonna be getting max airflow through them, next time we meet around christmas hopefully you can see the install for yourself!! Definatly I worth wile mod in IMO... :D

I see how you simulate it now. Its an interesting result but that 18bhp loss you measure would not necessarily happen on the open road when you have max cooling air through the rad anyway by virtue of air speed. The fan doesnt do anything after about 30mph airspeed. I would doubt the Kenlowe would kick in either after 30mph either. You'll find it only comes in in traffic.

 

I would also think your power output could be well down on that test not only due to the fan drag locked up at 6500rpm but also partly due to the intercoolers now being roasted due to no cooling airflow through them. Hot intake air means reduced volumetric efficiency and a power drop. Think you would also be at risk of going to safety boost as det could have been brought on by hot boost air.

 

Again, like you say it's only a simulated test but you can set the Kenlowe fan to cut in at what ever temp you like as it comes with it's own ajustable thermostat. ;)

 

Just an interesting note on the way home from work this evening I have the interior fans on in the car set to 30Degress so I was nice and warm, then after a quick blast up the duel carrage way the car got hot so the Kenlowe kicked in and did it's thing, it is that efficent at removing hot air that the interior fans actually started to blow out cold air until the Kenlowe switched itself off!!! :cool: Need to set the adjustable thermostat to come on a bit later up the tempreature band I think??!!!

 

Also the car never onces entered safty mode once as it was showing a constat 14.4 Bar boost on the rolling road computer and internall aftermarket gagues were also showing 1Bar of boost and don't forget the Z only detects detination below 3000RPM!!! :D Jon

The pics..

 

 

 

 

The pics..

 

Cheers, Scotty!! Thanks very much for doing that for me mate, Promise I will subscribe soon!!! There a raffel to be one!! ;)

Hopefully these are larger cause of original hotmail reduction!!

 

 

 

 

 

I know how to post piccies now!! Thanks Scotty!! :D