PYTHON exhaust

[Peter]

Hello Guys,
I am thinking of changing exhaust for a python,
A friend of mine sells them and has one on his 2.6 type 4 (they sell for both type 1 and 4)
he recommends me the 42 mm primaries, but i now have 1 3/4 (44 mm)
on the CSP site they say 45 mm is good for 8000 rpm (dont know for what size motor)
My friend compared the 42 and 45  versions on his type 4 and had less torque over the whole rev range with the 45 mm.
So what do you think? keep the 45 mm size or not?
I will refresh my engine with a new cam in the future that will redline at about 8000, so I thought to choose the 45?

Peter

[Udo]

If you want to go up to 8000 you must use the 45 , for street and 7000 max i would recommend the 42

Udo

[Peter]

Thank you very much Udo !

[Harry/FDK]

What about traction bar fitting The pics on the CSP site don't show very much space in that area. (T4 and T1)

[Frallan]

Home made one fits well.

A picture before I fit the support

[Harry/FDK]

It's a tight fit, but it can be done. Thanks Frallan. (BTW Nice engine, how does the DTM perform on the T4 ? I have one of the first kits from Joe Locicero but i still have my doubts).)

[Frallan]

So far on this engine i have no problem. Now it is with Nicasils and lots of air coming through the side NACA scoops.
I have done about 5 laps on a circuit track as the most challenging test. After a few of thsoe runs I had more concern for oil temp than CHT. (all four measured)
Will probably know more this summer and double oil coolers and fan. Now it might be other reasons too. Too little road time to call any judgement yet.

[Steve DKK]

I just have to ask.. In the first picture... It that an OEM coat hanger holding the oile lines together?

[Frallan]

He he!

Yeah that looks pretty suspicous and should maybe not be in that picture.
It is alumnium welding rod I used tohold the oil lines away while mounting, fitting and that stuff. If you look closer you will see a oily old tie wrap holding the hoses together...
I am giggling at your guessing. Coat hangers are good for a lot of things, no doubt about it but in this case, nope.
Should have taken that away prior to the shot.