Thread: certification query

Unsure of this but have heard that you only need to certify a engine swap which has a greater than 20% increase in power..

So does this mean I can go from the b16b (185 hp) to the B18CR (200 Hp) without a cert? As thats not a 20% jump is it?

Just wondering and cheers for any replies

Not 100% sure but I've been told it also needs to be certify if its capacity is increased more than 5%.

pretty sure you do need one due to the jump in CC's

cert is not required if the substitution of engines when compared with the OE engine, the replacement engine:
– is of the same or less cubic capacity, and
– has equal or less weight, and
– has the same or less power output, and
– uses the same fuel (petrol, diesel, LPG, CNG), and
– uses the same unmodified attachment points and system (ie bolts-in), and
– uses the same family of block and cylinder head from the same vehicle manufacturer, and
– is of the same configuration.


the modifications result in not more than 20% more power than the OE engine

if you want it to be legal then get a cert, yes a WOF inspector might not notice but if you have an accident you may not be covered by insurance

Originally Posted by Horny_Devil

is of the same or less cubic capacity,

Yup will need one
Cheers

Why not just put the crank, rods and pistons in the b16b block, noone would ever know!

From recent experience i failed wof for having a B18 block with the B16 head on as factory spec states its B16. $450 later and a month on and still waiting for cert plate to arrive.

^ Of course, its a bigger engine, if you had B18c internals in a B16b stamped block there is no way to tell though (B16b is same size as B18c just has different crank and rods for less displacement)

Originally Posted by smashYOU

What about a ef si zc running a b16a?

''uses the same family of block and cylinder head from the same vehicle manufacturer''
Will it fall under this?

ZC is actually the D series family. Still increasing power, so cert it

More then 20% power difference,

Originally Posted by smashYOU

What about a ef si zc running a b16a?

''uses the same family of block and cylinder head from the same vehicle manufacturer''
Will it fall under this?

different family needs a cert

Originally Posted by smashYOU

What about a ef si zc running a b16a?

''uses the same family of block and cylinder head from the same vehicle manufacturer''
Will it fall under this?

No, needs cert because it's 1/ it's a different family of both block and head, 2/ it has more power and 3/ it has different attachment points.