Rover v8 3.9 valve springs & boost?
Moderator: phpBB2 - Administrators
Rover v8 3.9 valve springs & boost?
At what boost will std springs (& cam) be ok with?, keeping well below the max RPM, thanks
-
- Forum Contributor
- Posts: 3979
- Joined: Sat Nov 18, 2006 6:22 pm
- Location: Northern Ireland
Re: Rover v8 3.9 valve springs & boost?
The cam wont care...and presumably if keeping a standard cam you dont intend to be using much boost anyway, so wouldnt worry too much.
Re: Rover v8 3.9 valve springs & boost?
Translation: why are you wasting your time with std stuffstevieturbo wrote: ↑Wed May 01, 2019 5:36 pmThe cam wont care...and presumably if keeping a standard cam you dont intend to be using much boost anyway, so wouldnt worry too much.
Re: Rover v8 3.9 valve springs & boost?
not at all helpfull......
-
- Top Dog
- Posts: 1278
- Joined: Mon May 04, 2009 6:53 am
Re: Rover v8 3.9 valve springs & boost?
Read the post properly...
The cam wont care...and presumably if keeping a standard cam you dont intend to be using much boost anyway, so wouldnt worry too much.
Cheers,
John
John
Re: Rover v8 3.9 valve springs & boost?
Re; Translation: why are you wasting your time with std stuff
-
- Top Dog
- Posts: 1278
- Joined: Mon May 04, 2009 6:53 am
Re: Rover v8 3.9 valve springs & boost?
I guess that depends on you and what your particular sensitivities are.
I saw it as an answer to your question, but you clearly don't.
I saw it as an answer to your question, but you clearly don't.
Cheers,
John
John
Re: Rover v8 3.9 valve springs & boost?
unstable load, Im greatfull for your input, I think the idea of tech help is that some one asks a question, & they get a responce that is constructive and perinent to the question...... Re; just saying, why bother is neither!
Eliot, Do me a favour, never respond to anything I ask, ok
Eliot, Do me a favour, never respond to anything I ask, ok
-
- Forum Contributor
- Posts: 3979
- Joined: Sat Nov 18, 2006 6:22 pm
- Location: Northern Ireland
Re: Rover v8 3.9 valve springs & boost?
Eliot wrote: ↑Sat May 04, 2019 4:42 pmTranslation: why are you wasting your time with std stuffstevieturbo wrote: ↑Wed May 01, 2019 5:36 pmThe cam wont care...and presumably if keeping a standard cam you dont intend to be using much boost anyway, so wouldnt worry too much.
Not at all....standard cam will work perfectly fine with boost. And if engine etc is already together and in the car....not really a lot of sense pulling it all apart unless he really wants to.
And likewise with springs...the fact it is still a standard cam and most likely low boost and has stated low rpm..there just isnt anything in that area to be concerned about, unless say the parts had 200k on them and they probably need replaced anyway.
Re: Rover v8 3.9 valve springs & boost?
Yes, I would have thought a non STD spec cam would be when you have forged pistons rods etc, Im on Rover cast pistons so thats why i fitted a new STD cam & followers.
-
- Forum Contributor
- Posts: 3979
- Joined: Sat Nov 18, 2006 6:22 pm
- Location: Northern Ireland
Re: Rover v8 3.9 valve springs & boost?
If it was a new build and you were actually buying a cam, I definitely would have bought something better than standard.
Re: Rover v8 3.9 valve springs & boost?
I stripped the engine & drilled tapped the mains for cross bolting, amongst my new RV8 parts I have was a cam, specs of 200 @50" & lift 433" in & ex'. so I used that.
For a road car to smoke about in, I thought that would work quite well....
For a road car to smoke about in, I thought that would work quite well....
-
- Forum Contributor
- Posts: 3979
- Joined: Sat Nov 18, 2006 6:22 pm
- Location: Northern Ireland
Re: Rover v8 3.9 valve springs & boost?
It will...but always room for improvement.
Re: Rover v8 3.9 valve springs & boost?
The question is though, at what level do you need rods, pistons & springs?
Re: Rover v8 3.9 valve springs & boost?
When you cross bolted the mains, did you have the block crank tunnel line bored ?