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Piston & Rod upgrade or not?

the air goes through the intercooler before going into the engine anyway so wont make much difference on a turbo car

 
Interesting discussion guys...the thing is Porsche themselves designed the airbox to take it's cool air from outside of the engine bay so there is a good reason behind this or why waste the extra money that this cost, not just in the airbox design but also in the inner wing having the hole pressed into it. Having said that, my own car developed a proven 368bhp/382torque with the cone filter inside the engine bay as shown by others here, so big power is achievable, btw Wayne stated on the day that the engine had more to give if I wanted it when tuning the car. The first tune was 330bhp, he said did you want more, well of course I did...so the next tune took it to 368bhp and I left it at that..:) Now the thing is as previously stated my car now produces far more power/torque and truly is a delight to drive, both on or off boost, it's impossible to quantify which of the latest developments on my engine have benefitted it the most as just about everything was changed with over 10k put into it for the latest mods, remembering that this is all on parts, I did all of the work myself except for machining of the bores/crank. I have already stated how good the car is off boost and given some possible reasons for this, however one that I had forgotten was the re-positioning of the cone filter which is now outside of the engine bay, I suspect that this has helped greatly with performance both on and off boost plus the fact that a lot larger filter can be fitted in this position although going by the bhp ratings for said filter it's still too small for what I need but is the highest rated filter that I could find.

regards

Pete

 
u63af said:
the air goes through the intercooler before going into the engine anyway so wont make much difference on a turbo car
Click to expand...

Yes, the Intercooler decreases the air temperature, but if it starts higher than it could be the end result will be

a higher air temperature going into the engine. More Boost also means more Heat.

R

 
. . . and the quotes.

I agree, Roger makes "some" valid points but then again if I gave my opinion on every thread in the forum ad nauseum then I might make sense every once in a while*.

*It might also help if I was ever serious and hadn't been smashing the Xmas drinks.

 
I know it's a known fact that the colder you can get the induction air into the engine the faster it will go! So when I was younger (17) I had my first car which was my non turbo 2.5 lux 163bhp and in hearing someone boasting that they had rigged up there focus air con pipe to blow on the air cone, and it went so much faster! , I then began to invent new ideas for my lux as unlike my turbo that I now have also it didn't have airCon...so I fitted a super large stainless air filter cone and made a large chrome tube which sucked the air from the arch and I installed a mesh to collect any debree and also installed a fan which I could switch on and off from the cockpit, which was from a computer drive so that it didn't interfere with my radio? Anyhow this fan was set to suck in from outside air and propell the air down the pipe into my air filter.

I cant say that I noticed a huge improvement at the time but what I can say for a fact is: when it was very nippy outside and I went for a blast and turned the fan on, it felt as though I had been given another 30bhp and at every freezing opportunity as long as it wasn't icy, I would throw away £40 that night just driving about on my own enjoying the extra power till my Petrie light Glowed orange! Then off back home I went 😊

 
Dan944t said:
I know it's a known fact that the colder you can get the induction air into the engine the faster it will go! So when I was younger (17) I had my first car which was my non turbo 2.5 lux 163bhp and in hearing someone boasting that they had rigged up there focus air con pipe to blow on the air cone, and it went so much faster! , I then began to invent new ideas for my lux as unlike my turbo that I now have also it didn't have airCon...so I fitted a super large stainless air filter cone and made a large chrome tube which sucked the air from the arch and I installed a mesh to collect any debree and also installed a fan which I could switch on and off from the cockpit, which was from a computer drive so that it didn't interfere with my radio? Anyhow this fan was set to suck in from outside air and propell the air down the pipe into my air filter.

I cant say that I noticed a huge improvement at the time but what I can say for a fact is: when it was very nippy outside and I went for a blast and turned the fan on, it felt as though I had been given another 30bhp and at every freezing opportunity as long as it wasn't icy, I would throw away £40 that night just driving about on my own enjoying the extra power till my Petrie light Glowed orange! Then off back home I went 😊
Click to expand...

Good Contribution Dan from your "Cold Ambient Air" experience, as I'm sure many of us have experienced?

As opposed to some members who do nothing but bitch & post negative, personal insults.[8|]

It's a fairly common practice on Turbo car tuning to keep the temperatures down and if possible fit bigger intercoolers, and move their location

to a cooler area (if possible) all done to make the air supply to the engine temperature as low as possible.

Here's some info on Air Intake and Boxes,

http://www.formula1-dictionary.net/airbox.html

R

 
quick update..at last [2 hours ago] its off the dyno! Settled at 311hp at 1bar & without the MBC connected. I'm advised to run it for 500 miles and take it back to have MBC connected at which point 1.1bar should give 330-340hp?? Just waiting on print out to be emailed over but reading back i think shelling out for an electronic controller maybe prudent to add to the drivability

Nowhere near driving it yet, next week I'll start chopping into the bodywork to get the arches fitted. Updates as and when they happen.

[:)]

 
Nice results slick!

I was quite proud of my boost curve with an ebc clicky

On the air filter discussion, I stuck with the standard panel filter for a while, I had a K&N in there for a while but I found fine dust on the wrong side of it so went back to paper, I did manage to collapse one though, it sucked in and over the airbox outlet. (bigger turbo - higher boost)

I then went to a cone behind the headlight with air ducted through the wing to it, I did also have a small piece of plastic on the leading edge of the bonnet above the filter for 2 reasons -

1) water used to run into the filter when parked outside in the rain

2) it 'may' have deflected some additional air in - I meant to do some wool /camera checks but never got around to it.

I would have liked to box the filter in fully there is a template on rennlist somewhere to help (NZ951 posted it I think).

The colder the incoming air the better and behind the IC the radiator and the a/c condenser it isn't going to be as cool as it could be.

had a quick look for the template and found this thread http://rennlist.com/forums/944-turbo-and-turbo-s-forum/774712-maf-air-intake-isolation-results.html

and the template thread

http://rennlist.com/forums/944-turbo-and-turbo-s-forum/189363-my-first-fibreglass-effort-intake-partition-now-with-upgrades-2.html

 
I should add that my boost curve was with a bigger turbo this is a similar set up by me on k26/8 clicky

with a greddy profec B spec 2 - not as fancy or feature rich as some and I don't think they are made anymore

Tony

 
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