B12 mk1 base plate spacer.

[Alex]

Hello all. Dose a base plate spacer alter the cam timing? Eg when you put busa rods in. Thanks Alex.

[davecara]

No 

[Fredrik_Steen]

29 minutes ago, Alex said:

Hello all. Dose a base plate spacer alter the cam timing? Eg when you put busa rods in. Thanks Alex.

Yes, a 2mm spacer will do about 6 degrees

[Gixer1460]

Yeah, it equals about 3/4 chain link so slotted sprockets advisable.

[Alex]

A well know turbo conversion company has put a spacer plate in but hasn’t altered the cam timing to compensate. Will it make much difference to performance?

Edited October 11, 2022 by Alex

[Fredrik_Steen]

On 10/11/2022 at 10:50 PM, Alex said:

A well know turbo conversion company has put a spacer plate in but hasn’t altered the cam timing to compensate. Will it make much difference to performance?

It's not optimum. Like Gixer1460 said get slotted sprockets 

[Gixer1460]

The Dyno and I certainly noticed 1 tooth out - whether yours shared between in & out cams would be?

[clivegto]

On 10/11/2022 at 9:38 PM, Gixer1460 said:

Yeah, it equals about 3/4 chain link so slotted sprockets advisable.

What do you think would be the best settings ° for the cams would be with a 2mm spacer plate for turbo use. 

[Gixer1460]

Can't say whats best as i've only used one set-up like that which is probably completely different to yours - 1186 kit 12:1 pistons 2mm plate, Draw through T2,  S&S Shorty Super E, std. cams, rods, crank, head and using a Dyna 2000. Never changed the cam timing from when it was built NA, used it with NO2 and same with turbo - 110/110.