Tim@TBDevelopments
Lifer
so what was the well known brand on the side?
Tim
Tim
Speedvision new billet cams 265 degrees and uprated valve springs
- Thread starter Barretta
- Start date
ryan-11
Member +
Ted
Member +
cant give you guys a definite answer until its mapped. all i can say for now is the cam itself lined up fine, all timiing marks ok. dizzy needed to be spun a bit to return timing to 10 degrees btdc. it wouldnt run right at first but now after a lot of messing around with different shims(i have 3 spare heads) it runs and idles fine, bit lazy off boost compared to std cams.
so apart from sorting clearances it appears to be ok. but if i get it mapped and its making less power im wrong, and chris is on holiday so cant get it mapped.
im such an expert now taking cams in and out, fed up doing it. this better work!
so apart from sorting clearances it appears to be ok. but if i get it mapped and its making less power im wrong, and chris is on holiday so cant get it mapped.
im such an expert now taking cams in and out, fed up doing it. this better work!
ryan-11
Member +
cant give you guys a definite answer until its mapped. all i can say for now is the cam itself lined up fine, all timiing marks ok. dizzy needed to be spun a bit to return timing to 10 degrees btdc. it wouldnt run right at first but now after a lot of messing around with different shims(i have 3 spare heads) it runs and idles fine, bit lazy off boost compared to std cams.
so apart from sorting clearances it appears to be ok. but if i get it mapped and its making less power im wrong, and chris is on holiday so cant get it mapped.
im such an expert now taking cams in and out, fed up doing it. this better work!
Cheers Ted, hopefully they work, still waiting on mine
did u have to get the cam mechined to get the cam gear on?
Tony Harrison
Member +
Has no one then got any pictures showing the standard cams timing marks, and some pictures of the Speedvision ones that are misaligned?
i think the biggest problem here is the springs.
i also bought a set of springs and cams as a combo over a year ago.
sent it to an engineer to do the headwork.
but been such a long time since they put the springs in so no way of knowing if base pressures were checked and machined as at that time they were sold as direct fit.
car has been standing since completed so maybe 30 kilometres since build.
gonna just strip it out and put standard springs in?
what doesn't make sense is that why sell a spring as an upgraded one if its not really compatable for our engines.in that case u could take any spring same size as the 4efte one , just harder and use it ,then get an engineer to machine base pressure.
nothing special about these springs as i originaly thought?
i also bought a set of springs and cams as a combo over a year ago.
sent it to an engineer to do the headwork.
but been such a long time since they put the springs in so no way of knowing if base pressures were checked and machined as at that time they were sold as direct fit.
car has been standing since completed so maybe 30 kilometres since build.
gonna just strip it out and put standard springs in?
what doesn't make sense is that why sell a spring as an upgraded one if its not really compatable for our engines.in that case u could take any spring same size as the 4efte one , just harder and use it ,then get an engineer to machine base pressure.
nothing special about these springs as i originaly thought?
Tim@TBDevelopments
Lifer
like i said in a pervious thread there probably from some america made engine and there close to the 4e but are higher spring rate, so just using those.
this is common in the 3sgte world as alot of american suppliers are selling there own brand and there actually from a chevy v8 or something similar.
Tim
this is common in the 3sgte world as alot of american suppliers are selling there own brand and there actually from a chevy v8 or something similar.
Tim
Agent-SCUD
Fresh Recruit
I have purchased a set of these camshafts and as said earlier the intake cam does not accommodate the split gear with out machining. secondly the stock cam timing marks has the intake cam out so badly the car doesnt want to start. and the worst part about it is MOST of the lobes on my exhaust cam are grinding to pencil points.. discovered this because of alot of noise in the head and tuning the engine was hard enough. my #3 lobe on the exhaust side is completely f**KED and it has no kind of curve on the lobe... now for the car i have been building for the past year or more has an engine full of metal.... Im not pleased!
Agent-SCUD
Fresh Recruit
Yea i have some pics will put them up soon
Agent-SCUD
Fresh Recruit
Here are the pics... I am using stock springs..
starletgtturbo1
Member +
what base pressure did u use?
Texx
Super Moderator
Sorry to ask the obvious, but you did check the valve clearances and re-shim them if any weren't within spec? My first thoughts would be either insufficient valve>cam clearance or insufficient lubrication.
Last edited:
starletgtturbo1
Member +
as far as am aware these cams are made by crowler now, and they are shit hot, as above unless you bought them about a year ago when there was problems
Tim@TBDevelopments
Lifer
i've said this from the start production camshafts you shouldn't have to be messing around with base pressures etc its only when dealing with custom cams. Look at HKS you don't need to be base pressuring those on any other engine. (i do just to be sure) but you can take them out the box and drop them straight in without messing around
like someone said these just seem to be getting worse and worse. i'm gonna stick to standard i think for my build as these are just to unreliable, and i was really hoping development would improve and these would turn out as a good item. alas
Tim
like someone said these just seem to be getting worse and worse. i'm gonna stick to standard i think for my build as these are just to unreliable, and i was really hoping development would improve and these would turn out as a good item. alas
Tim
Tim@TBDevelopments
Lifer
where did crowler come from? you sure on this?
i've got some good contacts at crowler so could ask about, i'm betting they don't know anything about these, as looking at the machine and lathe work its prietty rough for crowlers standards
Tim
i've got some good contacts at crowler so could ask about, i'm betting they don't know anything about these, as looking at the machine and lathe work its prietty rough for crowlers standards
Tim
starletgtturbo1
Member +
well ive had 2 sets the first ones were utter shit quality ways, then i order a new set and they cam in a crowler box. now ive had crowler cams in my skyline and evo and they look similar in quality to them.