Timing H22a4

[preludevtec]

Iv got a H22a4 in my 1997 prelude. im putting nitrous on it and it says to retard the timing 4 degrees. I cant fing any timing marks Where and how do i do this? Thanks

[on point]

the timing marks are on the flywheel, look below the distributor between the block and trans should be a rubber plug pull it out and the mark's are right there.

[preludevtec]

Thank you iv looked everywhere