Spec me a 450 bhp engine please
05-03-2012, 12:33 PM
#1
Spec me a 450 bhp engine please
Right I've got myself a rolling shell sorted, now my attention is on building my first yb engine....
Funds are limited at best so everything is going to be used/refurbished. Also I'm going to build it in stages as finances allow.
I'm going to look out for a 200 block if poss as I've been led to believe I won't have to long stud it. Can someone confirm this?
I've got an opportunity to buy gt3076 cheap so i'l prob go down that road.
Am I ok pocketing the standard pistons? Should bring the cr down a bit too
Any suggestions on cam choice? Bd14 inlet and standard exhaust?
Headgaskes choice?
Are the rods ok at this spec?
Which injectors will flow enough? Siemens
I take it I'm not in the territory for double valve springs yet?
Who can do me a good port/polish
Or anything else I should be aware of or missed
Dan
Funds are limited at best so everything is going to be used/refurbished. Also I'm going to build it in stages as finances allow.
I'm going to look out for a 200 block if poss as I've been led to believe I won't have to long stud it. Can someone confirm this?
I've got an opportunity to buy gt3076 cheap so i'l prob go down that road.
Am I ok pocketing the standard pistons? Should bring the cr down a bit too
Any suggestions on cam choice? Bd14 inlet and standard exhaust?
Headgaskes choice?
Are the rods ok at this spec?
Which injectors will flow enough? Siemens
I take it I'm not in the territory for double valve springs yet?
Who can do me a good port/polish
Or anything else I should be aware of or missed
Dan
05-03-2012, 07:22 PM
#2
well heres my engine spec made 447bhp
long studded 200 block,
cosworth pistons with 136mm rods,
polished and knife edge crank
big winged sump
neil roper 500bhp+ head with piper double valve springs
mad inlet cam, std ex cam
rs 500 inlet with 4 rc 1000s
tt t38
autronic sm2 with cdi 500r
32 psi boost
long studded 200 block,
cosworth pistons with 136mm rods,
polished and knife edge crank
big winged sump
neil roper 500bhp+ head with piper double valve springs
mad inlet cam, std ex cam
rs 500 inlet with 4 rc 1000s
tt t38
autronic sm2 with cdi 500r
32 psi boost
05-03-2012, 07:40 PM
#3
Right I've got myself a rolling shell sorted, now my attention is on building my first yb engine....
Funds are limited at best so everything is going to be used/refurbished. Also I'm going to build it in stages as finances allow.
I'm going to look out for a 200 block if poss as I've been led to believe I won't have to long stud it. Can someone confirm this?
I've got an opportunity to buy gt3076 cheap so i'l prob go down that road.
Am I ok pocketing the standard pistons? Should bring the cr down a bit too
Any suggestions on cam choice? Bd14 inlet and standard exhaust?
Headgaskes choice?
Are the rods ok at this spec?
Which injectors will flow enough? Siemens
I take it I'm not in the territory for double valve springs yet?
Who can do me a good port/polish
Or anything else I should be aware of or missed
Dan
Funds are limited at best so everything is going to be used/refurbished. Also I'm going to build it in stages as finances allow.
I'm going to look out for a 200 block if poss as I've been led to believe I won't have to long stud it. Can someone confirm this?
I've got an opportunity to buy gt3076 cheap so i'l prob go down that road.
Am I ok pocketing the standard pistons? Should bring the cr down a bit too
Any suggestions on cam choice? Bd14 inlet and standard exhaust?
Headgaskes choice?
Are the rods ok at this spec?
Which injectors will flow enough? Siemens
I take it I'm not in the territory for double valve springs yet?
Who can do me a good port/polish
Or anything else I should be aware of or missed
Dan
headgasket choice will depend on the head and block surface, the head will need to be skimmed and the blocked decked if using a metal gasket.
3076 is a bit big for 450, better off with a 3071r or t38
standard mahle pistons are fine at that power level & yes you can pocket them, the standard rods are good for 600hp + if in good condition
i would stick to standard 8:1 compression
cam choice will depend on who is mapping it, but bd14 inlet and standard exhaust is a proven package - will work well with a ported head
siemens 83's injectors
neil roper is your man for head work http://www.roperdevelopments.co.uk/
double valve spings will depend on revs, but if its a budget build perhaps the money is best spent elsewhere
get the machining done by someone decent and also get the bottom end balanced
cheers
Last edited by LHD220Turbo; 05-03-2012 at 07:43 PM.
05-03-2012, 08:23 PM
#4
200 block can either be long studded or not, you cannot long stud a 205 block. at 450hp i wouldnt worry about long studding but your choice. if your on a budget then i wouldnt
headgasket choice will depend on the head and block surface, the head will need to be skimmed and the blocked decked if using a metal gasket.
3076 is a bit big for 450, better off with a 3071r or t38
standard mahle pistons are fine at that power level & yes you can pocket them, the standard rods are good for 600hp + if in good condition
i would stick to standard 8:1 compression
cam choice will depend on who is mapping it, but bd14 inlet and standard exhaust is a proven package - will work well with a ported head
siemens 83's injectors
neil roper is your man for head work http://www.roperdevelopments.co.uk/
double valve spings will depend on revs, but if its a budget build perhaps the money is best spent elsewhere
get the machining done by someone decent and also get the bottom end balanced
cheers
headgasket choice will depend on the head and block surface, the head will need to be skimmed and the blocked decked if using a metal gasket.
3076 is a bit big for 450, better off with a 3071r or t38
standard mahle pistons are fine at that power level & yes you can pocket them, the standard rods are good for 600hp + if in good condition
i would stick to standard 8:1 compression
cam choice will depend on who is mapping it, but bd14 inlet and standard exhaust is a proven package - will work well with a ported head
siemens 83's injectors
neil roper is your man for head work http://www.roperdevelopments.co.uk/
double valve spings will depend on revs, but if its a budget build perhaps the money is best spent elsewhere
get the machining done by someone decent and also get the bottom end balanced
cheers
exactly what i was after, thanks 
06-03-2012, 03:57 PM
#5
ive gone for a 200 blick
ported polished head
not sure on cams but they have verniers so assuming they are uprated, or at least the inlet is.
modded 2wd inlet with spacer
83lb siemens injectors
gt3076r internally gated turbo - this is on 0.63 housing so should spool up quick
omex 600 ecu
hoping to get as close to 500 as i can but keep it nice and driveable rather than chase figures.
I reckon it will do 450 quite easily
ported polished head
not sure on cams but they have verniers so assuming they are uprated, or at least the inlet is.
modded 2wd inlet with spacer
83lb siemens injectors
gt3076r internally gated turbo - this is on 0.63 housing so should spool up quick
omex 600 ecu
hoping to get as close to 500 as i can but keep it nice and driveable rather than chase figures.
I reckon it will do 450 quite easily
it should produce the goods 
07-03-2012, 08:24 PM
#14
Advanced PassionFord User
ive gone for a 200 blick
ported polished head
not sure on cams but they have verniers so assuming they are uprated, or at least the inlet is.
modded 2wd inlet with spacer
83lb siemens injectors
gt3076r internally gated turbo - this is on 0.63 housing so should spool up quick
omex 600 ecu
hoping to get as close to 500 as i can but keep it nice and driveable rather than chase figures.
I reckon it will do 450 quite easily
ported polished head
not sure on cams but they have verniers so assuming they are uprated, or at least the inlet is.
modded 2wd inlet with spacer
83lb siemens injectors
gt3076r internally gated turbo - this is on 0.63 housing so should spool up quick
omex 600 ecu
hoping to get as close to 500 as i can but keep it nice and driveable rather than chase figures.
I reckon it will do 450 quite easily
Ran whats that a getto Geoff GL Autos Block LOL!!!
.
Last edited by Tarren; 07-03-2012 at 08:32 PM.
08-03-2012, 04:11 PM
#17
Advanced PassionFord User
09-03-2012, 02:45 PM
#20
Advanced PassionFord User
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