486 replies to this topic

[twrminisport]

Thought so. Why go 266 next time? do you find its too lumpy or what?

Jesus

[PhilipGCaldwell]

Thought so. Why go 266 next time? do you find its too lumpy or what?

Jesus

Its hard to explain without hearing it or driving it in person, and maybe I will find it better when its had a RR setup, just the 266 will pull like a train from a standing start right up to 6000rpm

like I say will prob be perfect after I've done the tappets put the megajolt on and had a RR session so I will prob change my mind

[twrminisport]

Ahh i see.
Yes, i think you should find it better then....

When are you planning on fitting the MJ? Then bring on the rollers!

Jesus

[PhilipGCaldwell]

gonna fit the megajolt this week sometime, the loom is already made up, just need to plug it in and download a map to suit a fast road 998.
looking at the weather forecast his week though, i doubt I wil be working on it in the evenings this week

[twrminisport]

Ah cool.
Where abouts are you looking for the maps?

I would get out onto a quiet road and have a play with the map yourself before the RR

Jesus

[PhilipGCaldwell]

Ah cool.
Where abouts are you looking for the maps?

I would get out onto a quiet road and have a play with the map yourself before the RR

Jesus

autolabs forum, got a fast road 998 one off there last night

[twrminisport]

Nice one

[jaydee]

yes 276, its good, but I think I would do 266 next time for all out smoothness/power compromise

I know what you're talking about.
We sometimes do run at B roads then at kart tracks, well, its nice to rev it when doing windy roads but I really notice a problem when we run at kart tracks..
I'm gonna change engine spec too, the 276 + 1.3 rollers is rocket when revved but too lazy when out of slow corners at kart tracks in 2nd gear, even slower than the old 256 i had before. Its annoying when it comes on cam just at the end of the straight..LOL
But i dont think i will go for a 266 as it doesnt convince me, so i'm still thinking about it.

[PhilipGCaldwell]

yes 276, its good, but I think I would do 266 next time for all out smoothness/power compromise

I know what you're talking about.
We sometimes do run at B roads then at kart tracks, well, its nice to rev it when doing windy roads but I really notice a problem when we run at kart tracks..
I'm gonna change engine spec too, the 276 + 1.3 rollers is rocket when revved but too lazy when out of slow corners at kart tracks in 2nd gear, even slower than the old 256 i had before. Its annoying when it comes on cam just at the end of the straight..LOL
But i dont think i will go for a 266 as it doesnt convince me, so i'm still thinking about it.

Yup, exactly.

the 276 will give me a bigger figure to brag about down the pub though!

anybody know what the minisport own brand camshafts are like? The pricing of them makes them attractive

I eventually am gonna get a set of 1:3:1 roller rockers, the price always puts me off though

[mk3 Cooper S]

EDIT:Also not re-done the tappets to 15/16 thou, it went dark, it will possibly run better when set to the Kent cam clearances ie; not be as sluggish below 1500/2000 revs


Are you sure this is noting to do with your HIF 44 or the jetting?
Are you sure a bigger jetted HIF 38 will not suffice? - Depends on the power output ?

[PhilipGCaldwell]

Hif44 should be okay with this spec (people even use weber40's on 998s!)

don't get me wrong, its not as if its completely rubbish below 2000, just not as quick as I thought it would be, to be honest I think I will make a more informed opinion after its all set up 100% properly anyway.

After I did some mods to my old engine a few years ago it was running poorly, then after an hour on the rollers, it was a different car

Again, 276 cam pulls from 1500 rpm so anything below that will be a little boggy, especially in a 998

RR will sort it

[mk3 Cooper S]

Hif44 should be okay with this spec (people even use weber40's on 998s!)

They do but usually with long inlet manifolds and a redline of 8000 rpm.

Not much below 3000k in those.

[twrminisport]

Wait until youve got a good map and done the rollers then moan

Jesus

[PhilipGCaldwell]

Wait until youve got a good map and done the rollers then moan

Jesus

Exactly

[andymini12]

yes 276, its good, but I think I would do 266 next time for all out smoothness/power compromise

Don't say that i won't want to put my 276 in mine then!
Nah im going to stick with the 276.
Im not sure about the hiff44 atm though!
Going to see what your is like on the RR.