12 replies to this topic

[cristiano1968]

Hi thinking of installing a new camshaft
For my engine rebuild
Any suggestions ?
I'm going to rebore ro 20+
Also got on stage one kit
And lightened flywheel.

[DeadSquare]

The 948 cam from the 997 cooper is a bit better.  The Evo 001 is spritely and a 731 is sporty.

Edited by DeadSquare, 04 January 2020 - 03:52 PM.

[fokko]

The subject states that he has a 998.

Really it depends on what you want to do with it... Trackday usage, fast road, longer trips. Depending on the usage you would choose a camshaft. Also it depends on the cylinder head. If you're using a standard one, it doesn't make sense to fit a very hot cam...

[cristiano1968]

I'm just going to use it for going around town a few times a week.
.
Also in the future add a stage 3 head..
So as I have the engine apart was thinking of upgrading the camshaft.

[mk1leg]

I'm running an SW5 in a 998

[Minigman]

I ran a 266 in a 998 and found it great. Had a stage 3 head and twin SUs. Was very good and nippy with a 3.44FD.

Edited by Minigman, 04 January 2020 - 09:40 PM.

[dotmatrix]

Kent 266 is good in a 998 and nice for "normal" driving. Recently i put in the standard a+ cam (the one with one "ring" round it) this is also a nice cam but pulls from way lower

Edited by dotmatrix, 05 January 2020 - 07:59 AM.

[burchy35]

I also run a sw5 in a 998+40 with a slightly worked 202 head, single 1 1/2, balanced with a 3.4 diff in my van and she is a screamer ok. And very good manners.

[cristiano1968]

Sounds good then for a kentcam☺☺
What's sw5?
Is it a swifttune?

[detroitmini]

I ran a 266 in a 998 and found it great. Had a stage 3 head and twin SUs. Was very good and nippy with a 3.44FD.

 

I too am thinking of the 266 in a 998 with a stage 3 head. Do you think u could drop to a 3.1 FDR and still have enough low end?

[Minigman]

Yes you can but why?

The 998 loves to rev, even more so with a better head so it’s counter productive.

The 3.1 will reduce the acceleration but will rev lower at high speed.

If a quieter cruising speed is what you’re after then you’d be better off going with a 2.9 amd really killing the acceleration. 3.4 is a happy medium.

I’d even consider running a 3.7 in a 998 if I built another one. But it wouldn’t be a motorway car.

[detroitmini]

Yes you can but why?

The 998 loves to rev, even more so with a better head so it’s counter productive.

The 3.1 will reduce the acceleration but will rev lower at high speed.

If a quieter cruising speed is what you’re after then you’d be better off going with a 2.9 amd really killing the acceleration. 3.4 is a happy medium.

I’d even consider running a 3.7 in a 998 if I built another one. But it wouldn’t be a motorway car.

 

The why would be because here in Detroit, it feels like you have to get on the highway to go anyway. I dont want to really kill the accel so I'll prob take your advice and stick with the 3.4.

 

i'm young and still have hearing to give at the high revs 

[BaronVonchesto]

when i was asking for cam advice kent 256/266 was a popular recommendation, but I settled on the minispares EVO1 cam and Im very happy.

Ultimately it depends on what you want. EVO1 is on paper a bit much for a 998 but i find it quite lively (other than the somewhat lumpy idle - solved by a higher idle, which I need since my car has air conditioning)