will this cam suit?

[womble sri]

its a piper fast road 270 cam for an sri. im wanting to run it in my sr but with an sri head on my twin 40s

[Stuart]

its a tad erm well mild... it will give you bugger all in the way of gains, even with carbs. Ideally you want a minimum of 285 degrees of duration. and if possible 300...

[mad-driver]

its a tad erm well mild... it will give you bugger all in the way of gains, even with carbs. Ideally you want a minimum of 285 degrees of duration. and if possible 300...

may i add a little question. Is 300 degree going to be a bit harsh? I mean i noticed that Jims has a 300 cam in, but then his engine is a high state of tune anyway, so will a 300 degree cam in a small but quite highly modded engine be pretty good?

I ask because i too will be upgrading my cam soon but have really no idea what to go for lol

[Stuart]

if its setup right i dont see why a mild tuned engine wont run good with a 300deg cam... but the power band will be high up, eg not much before 3.5Kish...
a more adviseable cam is the kent ast2, or something fruity from the cat cams range.

[mad-driver]

hmm, see when i think about powerbands i dont really know what to go for, coz if you're gonna be putting your foot down you aint gonna let the revs drop much are you? So im that sense i would say a milder cam would not be as good as say that 300 one that kicks in at higher revs. Then again if you wanted it more midrange i suppose something like a 285 is better, but with my box being so short you dont stay in midrange for long anyway

I just feel a cam that gave you some good punch between maybe 4-6k rpm would be better, but i suppose that depends entirely on how you want to drive it

Whos best for a 300 cam anyway, any recommendations?

[Stuart]

jims piper 300 deg has given some great results in a few engines.

although ive not fired mine up (and its a solid profile lol) id suggest looking at catcams as they have good results in europe over the UK cam suppliers...

[Jim]

mad-driver, bear in mind my car is capable of reving to 8k, so the piper 300 power band may be too far up the rev range for you to make full use of it. I had a Piper 285cam for a while and that was really good. The AST2 like what Dan has may suit your engines power band/rev range better.

Jim

[leemh1234]

my mate has 1 in a 1.6 on twin choke webber (piper 300) and it feels like a turbo when it comes on cam it keeps up and beats his mums turbo technics escort cabbie.hope that helps in some way i'm going for a 285 in my gsi,o and dont forget a vernier pulley while ur at it 8)

[burgo]

mums turbo technics escort cabbie.
aka an rs turbo surely?? as it was turbo technics who designed the rs turbo system

[leemh1234]

nope turbo technics done the conversion on the xr3i engine they dont do the conversions anymore.its on a little blower. 8)

[mad-driver]

thanks jim and stu, probably will stick with something like the 285, i mean it will be 10times better than mine anyway as it is

Btw jim love the vid of your car on RR it does some immense, now for some Twin 40s then please :D

[Jim]

thanks jim and stu, probably will stick with something like the 285, i mean it will be 10times better than mine anyway as it is

Btw jim love the vid of your car on RR it does some immense, now for some Twin 40s then please :D

Cheers dude.

The 285 will do a good job.

Jim

[burgo]

thanks jim and stu, probably will stick with something like the 285, i mean it will be 10times better than mine anyway as it is

Btw jim love the vid of your car on RR it does some immense, now for some Twin 40s then please :Dwhat vid is this??

[Snowface]

a 1.6 with ast2 is a lot more drivable below 3k than a 1.3 with the same cam.

But its is drivable in the 1.3, wspecially when it comes on cam.

[Jim]

what vid is this??

I guess he means this one:

http://www.slimjimkelly.btinternet.co.uk/Vids/

It's just over 20mb though, so it might take a while to download. It's nothing special really, just my RR run from last year.

Jim

[burgo]

didnt take long at all. what were they actually doing though as it didnt look like any power run ive ever seen

[Stuart]

whats wrong with that power run?
he was being held at peakish power and then letting off, and going again to get repeated answers... simple really lol. The RR opearator wasnt your usual cowboy who gets in and runs hard and fast to see where your rev limiter is set lmao

[burgo]

thats exactly what i meant not like any power run ive ever seen lol

[Jim]

It was quite strange really. I was driving the car on the rollers (scarier than you think, lol) the operator was adjusting the limiter on my car manually so that we could see where the peak power was and where the power started to fall off. He would set the limiter, I'd floor it and we'd look at the power output, then I'd back off whilst he changed the limiter, I'd floor it again and we'd check the power output again, kept doing that until we found it's peak power.

It was odd the first time, he asked me to floor it, so I did and it only went to 5,500rpm. I started saying "theres something wrong, it wont go past 5.5k" he replied "That's cause I'm not letting you" hehe

Jim

[womble sri]

so ive decided to go for the 300 profile cam but also noticed the rally race 320 profile cam is this too wild?

[Stuart]

its a little too wild for most applications...

plus none of us have tried it (that i know of) so cant confirm how well/bad it works lol.


as i say, have a look on the catcams site aswell, they should ahve something quite funky in the 300 hyrdaulic range (just dont have more than about 11.5mm of lift on a cat cam (bits interfere unless machined)

[NOVA_JONO]

So basically would it be a waste of time getting a 270 cam?




Cheers Jono.

[Stuart]

erm depends. but if your serious about tuning the engine then yes a 270 is a waste of time........


285 minimum! (unles CC offer a better profile with apparently less duration)