fast road cams help

Level 7 User Joined: 11 Aug 2006 Posts: 206

mm prima racing got 4 pages of nice sounding tuning stuff, skint me likes the sound of fast road cams for 205 quid , are they worth getting ?? how do u fit them? easy or hard Confused

http://www.primaracing.com/ProductList.aspx?section=components

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

not from prima there not.

Site Subscriber Joined: 28 Jan 2005 Posts: 3547

ive got a set of piper 270 cams. Â£170 delivered.

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

fair price that.

Site Subscriber Joined: 28 Jan 2005 Posts: 3547

only done the running in period on stans engine, he sold as they wernt wild enough for his TB setup! and about 30miles in mine!

Level 7 User Joined: 11 Aug 2006 Posts: 206

what you mean by 270? why did u take em out ur car? look at this link for prima racing Â£205 a pair , do u mean the prima 1s are rubbish Confused

?

http://www.primaracing.com/ProductDetails.aspx?pid=10709

Level 3 User Joined: 14 Aug 2006 Posts: 64

Any chance of sending the parts abroad, say Portugal? Just emailed them but if anyone has the experience...

TIA

Site Subscriber Joined: 28 Jan 2005 Posts: 3547

i broke the car. yes i'll post to portugal but extra postage is at your cost.

Level 3 User Joined: 14 Aug 2006 Posts: 64

Dear Dan

I apologise if I did not make myself clear. Embarassed

I was wondering if Prima racing would send the parts abroad, but since you have those, what are the aplicable engines for the piper cams and what improvement (here I go again, Chris) can be expected? Shocked

TIA

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

wouldn't let prima make me a sandwich never mind their engine parts. Also they are double the price of other places.

Jorge the cams are for 16v's.

270 is the duration.

Level 3 User Joined: 14 Aug 2006 Posts: 64

Ok tks, mine's a 1.4 energy

Site Subscriber Joined: 07 Oct 2004 Posts: 2281

Piper in the UK have scans for a cam for the E-type engines in their database, spec is:

240Â° Duration
Valve Lift of 319 Thou
317 Exhaust

Dunno if this is spec of the standard cam or a fast-road/race application though.

Level 3 User Joined: 14 Aug 2006 Posts: 64

My ignorance:

Exactly what do those specs mean?

Embarassed

Site Subscriber Joined: 07 Oct 2004 Posts: 2281

Well the purpose of a camshaft is to open the inlet and exhaust valves. There are two things in a camshaft you can alter to get more performance:

1 - Lift
2 - Duration

Lift is as it sounds, it describes how far the valves are opened

Duration is the time the valves are opened for and is expressed as degrees of rotation since the camshaft is a rotating part.

That's about as much as I know, folk like Chris, Stan and BenR will be able to fill you in with more info than I can!

Level 3 User Joined: 14 Aug 2006 Posts: 64

So, if you change the duration and opening height of the valves to get more improvement, you must compensate the valves clearances and engine timing?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

as a general rule on SOHC engines liek the E7J the cams are ground aroudn the stock timing marks.

On DOHC you have the joys of playing with lobe seperation thus lift on overlap and so on

Level 3 User Joined: 14 Aug 2006 Posts: 64

Yes, but if you mess with the specs on a SOHC, should'n't you compensate the ECU/fuel pressure regulator spring/distributor/something else? Cool

Level 3 User Joined: 14 Aug 2006 Posts: 64

Anyway of doing that? Confused

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

the difference in camshaft profile isn't radical enough to requirte a remap. Its fine with the stock MAP, at worst there will be a slightly lumpy idle.

Level 3 User Joined: 14 Aug 2006 Posts: 64

So, what should one look for when upgrading? High duration-short height, high duration-long height, low duration- short height or low duration-low height?

Site Subscriber Joined: 02 Oct 2004 Posts: 1575

if your skint just get your old cams re ground and it won't cost you a fortune either. it will make the top end more ticky but what the hell it'll save you a bundle. try kent and piper