what power would this spec make?

26th September 2010, 13:48

Saxo vts.

exhaust.
*4-2-1 raceland
*saxsport 2'' race decat

engine.
* jp4 head
* newman ph4 cams
* newman competition valve springs
* gmc/atp throttle bodies

management.
*predator ecu

26th September 2010, 13:51

I'd take a guess at 185-190.

26th September 2010, 13:54

no chance, 175

26th September 2010, 13:57

about 160/165 max

26th September 2010, 14:10

I'd say around 140 atw max at a guess

26th September 2010, 14:17

160 - 170 mate from a guess hard to say really depends on map and who mapped it. Also the condition of the engine wether its been rebuilt or not too many factors that make a difference may aswell just pick a number out of the air. one thing is sure tho it will be a beast.

26th September 2010, 14:29

hmm alot of different numbers here, i know its hard to say and its mainly picking a random number around what other people have gained with same spec.

anybody point me in the direction of somebody with similar setup?

26th September 2010, 14:40

id say around 170ish. dont think it would be a wise idea to use newman ph4s without forged pistons tho, could all end in tears

26th September 2010, 14:45

Tbf with the ph4 cams you'd ideally need high comp pistons to get the full potential of the cams
And with that spec and high comps I've seen some people make 180bhp area

But with standard pistons you'd be really limiting the cams and they would be no better than ph3's some one on here has used ph4s with standard pistons but said he had to have them timed up very carefully and he said they are roughly like having ph3's
doing that I'd say only about 160bhp area poss 165 at a push, that's what alot of people are making with ph3/708's and the at bodies

26th September 2010, 14:53

true that, how much would i be looking to pay for a set of high comp pistons?

26th September 2010, 15:25

yep the ph3 would have to be timed so basiclly would be like ph3 spec, with high comp pistons depending on what size you go to... would see a good spread and peaking like toads engine if you go with 80mm pistons.... with good head work, would say between 170-185ish... without the pistons changed would say around 155-160ish.

but it not the peak power... it the spread and torque cuvres you want,

26th September 2010, 15:27

Quote:

Originally Posted by deans2k8

true that, how much would i be looking to pay for a set of high comp pistons?

500 quid plus bore work depending on the condsition of the bores.. and what size pistons you go for.

26th September 2010, 15:42

Wouldnt PH4 cams make it near impossible to drive as a daily? i.e it would be bunny hopping everywhere?

26th September 2010, 15:44

Quote:

Originally Posted by C18VTR

Wouldnt PH4 cams make it near impossible to drive as a daily? i.e it would be bunny hopping everywhere?

bunny hopping?

if that would be the case i would settle for ph3's

26th September 2010, 15:49

No the ph4 are actually suprisingly ok to dive with as a daily still, lea (Lee_vtr1) is going to be running toads engine soon as his daily an he's been in toads and said it's still nice to drive as a daily, it's just alot noisier lol

On the piston side of things there's actually a set 79.5mm wossners for sale ATM which will save slot of money, and are a good size too, like andy said you will see a good spread of power with pistons like these or the 80mm ones, also should see a nice increase in torque too

26th September 2010, 15:51

Also it all depends on how good the mapping is to how well it drives, and it's the same for anycam, you could go for ph3 and have a half decent map and will drive worse than ph4 with a good map, depends on how much time and money you have to splash on getting it done right and spend enough time on rollers to get it set properly

26th September 2010, 16:10

Quote:

Originally Posted by deans2k8

bunny hopping?

if that would be the case i would settle for ph3's

Well, i ment bunny hopping in traffic

26th September 2010, 17:07

Quote:

Originally Posted by iowracer

mate of mine had 106 gti same car rele. raceland 421, pugsport decat, raceland green cotton enclosed filter, cammed and had the engine port and polished. made 157bhp. dont quote me on this but throttle boddies or bike carbs normally make about 20bhp but with them mods your looking alittle less as you squeezing alot out already so 170 - 175bhp

where was it mapped? and engine port and polished? dont you mean the head?

26th September 2010, 17:17

Mine was similar spec but with bike carbs, high comp pistons and some head work and that pulled 176hp if thats any help?
Ph 4 were surprisingly useable on the road!

26th September 2010, 17:23

Quote:

Originally Posted by Beaniemoo

Mine was similar spec but with bike carbs, high comp pistons and some head work and that pulled 176hp if thats any help?
Ph 4 were surprisingly useable on the road!

very nice power output, and good to hear about the ph4's being useable on the road, just few more questions sorry guys

1, will i need solid lifters?

2, come mot time am i going to have any problems?

26th September 2010, 17:26

Quote:

Originally Posted by Beaniemoo

Mine was similar spec but with bike carbs, high comp pistons and some head work and that pulled 176hp if thats any help?
Ph 4 were surprisingly useable on the road!

was just about to mention about yours lol

26th September 2010, 17:27

I was running VTS lifters and spring and they worked fine to an extent!
I was having some valve bounce issues at very high revs so it produced peak power AT the rev limiter as I couldn't rev it further without the risk of damaging it. So it is fine, just very easy to ram the rev limiter in lower gears as cars usually rev a couple of hundred revs after peak power!
As for MOT....

lol

26th September 2010, 18:39

150 ish