Rockers 1.5:1 or STD
Turbo Mini Forums

Hi all, juts getting your thoughts here, i have just placed my order for the Avonbar Phase 3 Cam kit, would you prefer to use the STd rockers with this cam or continue with my 1.5:1 rockers?

do not care to much about drivability etc i drive the car twice to three times a month on the road and a few track days and drag runs in between.

thanks fo ryour help

179hp on 12psi 1293cc of pure A series
14.0et @101 mph

stick with standard as they give slightly more torque at the bottom with out losing hardley any at the top.

always looking for them bigger bunches of bannanas

The ph3 is a very spikey cam......

i ditched it back to the 2.

I ran 1.5s on a Ph2, totally useless. Could hardly get the car off the line.

Sold the PH2 to Jon^^^ and put a KC500 in (1.5s work ok with this cam).

Wil

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

JF- were you running 1.5's with it aswell?

I run 1.5's with the MED cam - which is the same as the phase 2 I belive.

Works well for me, very drivable with no lumpyness

I run 1,5s on a Ph2, and find it not much worse than what it was like on 1,3s.. Getting off the line is dead easy.

IMHO forget the ph 3 cam unless you are totally tracking the car ALL the time.

its a tad to radical for the road

phase 2 driveability and power!
phase 3 OTT

seems to be an area for discussion, there was a thread a while ago about this but was never really 'concluded', i've got a ph2 and not sure wether to run std 1.3's or get a 1.5

i'm running a ph2 and 1.5's although it hasnt turned a pulley yet

Yes i run 1.5's, tbh i have never tried 1.3's. the engine on boost a 3200rpm.

The ph 3 was a very different animal, coming on cam/boost at 4000rpm upto 8000.

This is in a 1312 cc engine with carfully set ignition/cam timing and a rolling tune at PB'b.

The phase 3 did proce any more power, it put the power higher up the rev range.

JF.

I have run the phase 2 with 1.5 rockers. Only a slight hint of "caminess" on idle, totally drivable with a good power spread. This cam is great for road motor, power from low down, and pulls nicely up to 6 - 6,500 or so. This engine had a moderatley modified head and 8.5-1 compression, running a T3 Turbo.
I have also run the phase 3 with 1.5 rockers. This is indeed a more "racey" profile, less power under 3000, but when it comes in, it comes in ! and it just revs and revs. The compression is lower at 7.8-1 and the head is more modified. But running a T2 Turbo this time, so i think this helps make it more tractable than it otherwise would be.

I've never visited a rolling road so couldn't say which cam is better, power wise, but the phase 3 does seem better from a "seat of the pants" point of view.
Though i know Jon has gone back to the P2 from the P3 and got some great times on the 1/4 mile this year, so i guess this speaks greater volumes than my "road testing" lol.

This doesn't really answer your question, but anyway ..... lol

Phil.

WWW.TURBO-MINI.COM

hhmm very interesting replies there thanks to all of you.

well i was using the kc500 kent cam for the past 5 years with 1.5 and it was really good just a little lumpy but nothing really, but the cam and followers are just screwed now, i will post some pics for you all to see.

i have just ordered the ph3 cam kit and they say to only use the 1.3 rockers, the motor should be back in the car in late nov so i will see how it goes then and let you all know.

reading the replies they are mixed, i guess it can come down to so many factors, if the cam timing is not spot on then it will be a problem and then of course the ignition timing will also not help if it is not spot on,then if the comp is too low then it migth be even worse.

well i will give it a go with 1.3's and if it is no good i will get the ph2 cam in jan/ feb when i fit the new gearbox i will start building later this year

thanks again

179hp on 12psi 1293cc of pure A series
14.0et @101 mph

here is my head

179hp on 12psi 1293cc of pure A series
14.0et @101 mph

You think the Kent 500 (mgMetro profile) was lumpy? And you're going for a ph3????

Woweee, you're in for a surprise!

red the phase 2

fire this in and time it at 108 deg & 1.3 rockers
i can assure you its a fantastic cam!

none lumpy ticks over like a small tiger & when this comes in! with the turbo its like a hungry lion as Fabrice once described.

its so true

i bet you will be throwing the phase 3 over the hedge once you have run this.

Please keep us posted

Edited by BENROSS on 2nd Nov, 2005.

does any one no the overlap period for a p2 and p3

always looking for them bigger bunches of bannanas

here you go

http://www.speedgenie.co.uk/avonbar/camshafts1.html

What was the discussion regarding the differences between the 'supplied' and 'actual' timing figures... I'm sure i recall this recently???

buy the looks of that cam i guess you were using 1.5 rockers

always looking for them bigger bunches of bannanas

yes i was using the mini spares 1.5:1 rockers

but i will go back to std ratio

now does anyone know what the LCA's for both the PH2 and PH3 cams?

Edited by RED850 on 4th Nov, 2005.

179hp on 12psi 1293cc of pure A series
14.0et @101 mph

thats another reason i dont like them , they have a tendancy to chew cams and followers up for breakfast.

i think if you do use 1.5's it may pay to use 1.3' for a few 1000 miles then switch to 1.5's, this will give the cam time to case harden a bit.

always looking for them bigger bunches of bannanas

This only happens if you don't change valve spring pressure accordingly. The reason why the 1,5 chew valvatraisn is because people use the same springs as they did on the 1,3s. This in addition to the "harder springs is better pub factor"

how do u work out which springs to use with what cam? for example i have the ph2 fitted, unsure what springs are on the MED turbo head i have tho. Still undecided on whether to go 1.3 or 1.5 too.

Edited by Mike on 17th Jan, 2006.

In a previous post on this subject didnt avonbar strongly recommend using 1.3's with a phase 2?

Whats going to break next!?

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