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Hubbell
22-04-2009, 23:15
New poster! (less than 10 posts)

I'm currently trying to get a bit more power. I'm changing to a small hybrid turbo (I think it's a KTR 180) and I'm planning on running about 16psi. I'm not sure whether to get a piper 270 or catcam 5500320. They're both have a similar profile. Can anyone on here recommend one as opposed to the other? With running just 16psi are either of the two cams above going produce a noticeable difference to the standard cam? cheers. :)
Mart
22-04-2009, 23:29
Not really. Those cams will push the power-band up the rpm scale, albeit not substantially, but either way it isn't gonna help you with a small ish (read restrictive) back-end of that turbo in situ.

Imho, either keep the cam o.e, or fit a larger blower...but then if you do that, I'd also be looking at a hotter cam than a 270; more like a 285, rt200, etc.
Andrew Cooke
23-04-2009, 13:26
http://www.rtoc.org/cam/?cam=Cat+5500320&lsa=&cam2=Piper+270&lsa2=&rocker=1.5&advance=0&vc=0.2

the catcam is a lot hotter than the Piper 270, it's nearer to the piper 285. As Mart said, save your money and keep the standard cam.
Nayls
23-04-2009, 18:13
Has anyone ever ran 0.3mm clearences?

my cam sheet say's it's what mine must be!
Mart
23-04-2009, 18:16
Yep, on my old rt200, exhaust side.
Nayls
23-04-2009, 18:18
Yep, on my old rt200, exhaust side.

only exhaust? mine state's it for both
i l k e r
23-04-2009, 18:26
.25 inlet, .30 exhaust on my RT200 :agree:
Mart
23-04-2009, 18:47
.25 inlet, .30 exhaust on my RT200 :agree:

:agree:
Andrew Cooke
23-04-2009, 19:24
Has anyone ever ran 0.3mm clearences?

my cam sheet say's it's what mine must be!

mine's 0.4, just do what they say
Nayls
23-04-2009, 22:13
mine's 0.4, just do what they say

ok,will do :)
Nick k
25-04-2009, 12:17
mine's 0.4, just do what they say

Oh bugger!! just looked what my 270 piper cam clearances should be. It say 0.25 Inlet 0.30 Exhaust. Is this right??:confused: Mine are set to standard at the mo!! Will it make much difference??
Hubbell
25-04-2009, 21:25
New poster! (less than 10 posts)

So the ktr180 is too small for a noticeable gain? Hmm shame as it's been gathering dust for some time in my garage. So when I bought it I assumed that it would give me some lag free bhp. Is this not the case or can the right T25 be as effective? My 5 is a for track use only so I'm looking for blower which is immediatly responsive out of corners, how much money would I be looking at for decent T25 and piper 180 cam plus vernier and all the other bits? Is it really worth the outlay? Would I achieve 170bhp with KTR180 set at 16psi or is that over optimistic? :confused: