Sup lads,
I don't know if theres already a thread about this but i tried searching it and couldnt seem to find it.
Ive read a fair bit on both the engines but still kinda iffy about buying a silvertop, and cause i can find a blacktop anywhere it might just be a silvertop.
What do u guys reckon is a better engine, yes iam going to do a light build on the engine when i get it, cams. cam gears, pistons minor head work, etc.
Cheers
oh god, please search harder next time.
Read through peoples members rides, get opinions shit like that.
Mine - S/T ftw, cheaper, if you are going to rebuild it anyway the km's don't really matter. More aftermarket support than B/T. Difference in power is 3kW NEW. this basically two tenths of fuck all. People will say that they do feel different, but if you're modding it then all that shit becomes irrelevant. Buy a S/T already and search harder.
<div class='quotetop'>QUOTE (Rollabender @ Jul 6 2008, 01:37 PM) </div>3KW not so sure about that <_< , I have a blacktop and the brother has a silver top, same engine dyno, ecu autronic, same trumpets and he had a custon set of pipes and I had ebay ones showed 165hp for his S/T and 185hp for the B/T. Up to 6000rpm very little difference then the BT romped away and made power all the way to 8600rpm. The silver top had given up the ghost at 7600rpm
My little beasty on the dyno
<div class='quotetop'>QUOTE (Rollabender @ Jul 6 2008, 02:07 PM) </div>the aftermarket support base is so marginal (in the blacktops favour as well) that its a waste of time really making any comparison at all. don't try to argue it cause its a moot point.
if i had a choice, i'd get a blacktop, theyre a heaps punchier motor to drive in factory form if you know how to treat them
and yeah, the 2nd gen silvertops are a better compromise between the two, and you still get the stronger bottom end
as standard engines, id say blacktops seem to drive and deliver power better than a silvertop, not by much though.
if you are going to do a build, id go for the s/t as they're usually a fair wack cheaper. and you'd end up with a very similar result to the blacktop with the same mods, but then you can argue that from factory the b/t head is a better design, and would be the better base.
as always comes down to what you want to spend, and whether you can justify the extra $500 or so on the blacktop.
Rhys
<div class='quotetop'>QUOTE (gunbz-r @ Jul 6 2008, 02:09 PM) </div>yeah thats what ive basically read up on,
its just so hard to find a bt, otherwise id buy it as ive got spare cash.
So pretty much both equally modded which would have a higher output?
okay mrs know it all, instead of gettin your knickers in a knot, post up where u found it?
haha good edit of the post?
Maybe post that shit up 1st time?
The more money you spend the more non-existant the difference will be. Not that the difference is much to start with anyway.
If you really want to go that far into it, the only deciding factor at a high level of modification will be which motor has a better inherent head design / valve angle / port shape / shit like that.
<div class='quotetop'>QUOTE (charged @ Jul 6 2008, 02:32 PM) </div>I quoted power figures when new - your example given has far too many variables to be reliable. Age is the main one. It comes down to bullshit small factors that must be kept uniform to make a proper comparison.
<div class='quotetop'>QUOTE (Rollabender @ Jul 6 2008, 02:09 PM) </div> I think this is a fair comparison, both engines are unopened, same dyno, ecu ( autronic SMC ), same atmospheric conditions(tuned on the same day), same exhaust system after the extractors, both were within specs for compression readings and both engines were tuned by the same guy. It shows when both engines are tuned correctly the BT is far superior than the ST in unopened stock spec with a decent ecu running the show. Show me the variables ?
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