304 flat spot, changed ignition and injectors now what?

[Deuce]

Re-adjusted the rockers today, they were all a bit on the loose side, made a big improvement. If one or two of the lifters aren't holding enough pressure, will that cause my dramas? Do I really need antipump lifters with a .471lift cam lt1 springs and street terra rollers?

No

10 characters

 

[ari666]

No

10 characters

this

times 1000

 

[ari666]

*edit* having said that... you have them now. theyre run-in... so shut up and get used to adjusting your rockers.

 

[ari666]

*edit* i didnt actually edit my post, i just made a new one... well thats fun too.

 

[Deuce]

*edit* having said that... you have them now. theyre run-in... so shut up and get used to adjusting your rockers.

This ^ ^

sorry, but yes.

 

[tim_pato]

One of them is really noisey on cold startup, nocks like a motherf@#ker for 10-15 seconds, do I just put up with it? Got it booked in at a mechanics next week, getting the fuel/vacume pressure checked and a leak down test.

 

[ari666]

itll be number 8. holdens have **** oiling. just something you have to live with till it chews off number 8 lobe then get a new cam...

 

[someguy360]

itll be number 8. holdens have **** oiling. just something you have to live with till it chews off number 8 lobe then get a new cam...

Agreed, mine has always had a bit of noise from 8 on cold starts while building top end pressure.

Holden V8's are a ticking time bomb when it comes to oiling, they have been for decades.

 

[mr j-man]

Holden V8's are a ticking time bomb when it comes to oiling, they have been for decades.

not if you do the correct oiling mods to the block

 

[Immortality]

Funnily enough, the Holden V8 is known for pumping to much oil into the top end, by rights that means the lifters also get plenty of oil. A cold start rattle however would more likely be caused by low oil pressure because of wear in other parts of the oil system creating a longer lag time from a cold start and building oil pressure to the top end.

not if you do the correct oiling mods to the block

agreed. The stock oiling system is fine for a stock engine (as long as it's serviced regularly and the correct grade of oil is used) but when you start to push it some little mods can make a big difference.