REGROUND 25DET CAMS IN A 25DE

[R33S2.5]

Hi, i am in the process of building a S2 25DE+T and a oppurtunity has come up to purchase reground 25DET cams, i was wondering if they would work in the 25DE head and if they would contact the piston or anything along those lines

[Ben C34]

Cams never touch the pistons.

 

But seriously without knowing anything about lift and duration of regrind how do we guess?

[R33S2.5]

sorry the valves, and the duration is 268 by 8.4

[GTSBoy]

Whilst it's quite unlikely that you won't have interference problems with those cams, you may well be the first person to try doing this specific thing. So the risk falls upon you.

The only possible concern would be that the hi comp pistons will offer a little less clearance. But it's not as if the lift or duration are particularly excessive, and 10+mm lift with >280° duration, plus dialling in back and forth, is known to work in DETs..... it seems you should be OK.

[R33S2.5]

Yeah i haven’t seen many threads about this, would the DET cams fit in the DE head however ? in the journals

[GTSBoy]

On 10/15/2021 at 4:05 PM, R33S2.5 said:

Yeah i haven’t seen many threads about this, would the DET cams fit in the DE head however ? in the journals

Of course they would. What makes you think they might be different?

[R33S2.5]

arent DET and DE heads labeled different ? like 73 and 75t ?

[GTSBoy]

Yeah, but in places where they are functionally different, like port sizes and valves. Even Nissan wouldn't be so daft as to make completely different cam tunnels, etc etc. So much easier just to make it all the same.