saxo vtr

[jamie281093]

i have a mk1 vtr withthe silver top single plug :) gunna go for a bit of s treet sleeper idea :) putting the bodywork standard and stuff, got the idea as being lowered wasnt practicle anymore, and i wanna make the engine have a bit more power, was thinking of a good induction kit & exhaust then maybe a pt40? any ideas or reccomendations? dont wanna be spending silly money or having to drop a new engine in thou if people are going to suggest vts conversion :P

[greyjasper51]

The cheapest way is 16v it... However you.wanna keep the 8v then rallye head and intake, simotta intake, ph3 or pt40 cam, 421 or a 4-1 manifold, decat with a s/s or saxsport, predator ecu if you wanna future proof it abit...

Throttle bodies would be a bigger step forward :-) but pred is 100% needed...

[jamie281093]

s1 rallye head yeah? what sort of power would i be looking at roughly?

[Cam]

How would it be a sleeper just be a standerd saxo people would assume its a vtr/s anyway..

[greyjasper51]

90bhp to start...

S1 head, induction, exhaust, cam, remap (predator) 112-118
Same with bodies (120-123)

[Gandi699]

Isn't the standard rallye J cam close to the ph3 anyway? According to the specs the J cam has a touch more lift than a ph3. And the 646 even more so, not sure about the Piper 285 but thats supposedly about as far as you can go before pistons need some pockets in them

[greyjasper51]

Dont think so... Highest lift if about 11-12mm with std pistons...

[Gandi699]

Standard J is 10.6 I think, the ph3 is 10.30 according to their website?
285 and the 646 are 11.25 ~ or so I believe

[greyjasper51]

Ive gotta do some research here ill update as i go... The pt40 on thebroller rockers gives a lift of 10.51 with a rocker ratio of 1.75:1 the cam itself has 6.something lift which is the highest available from kent cams for a vtr without going to the motorsport section... Ill have a look at max lift for the stock hatch ones, they run on std pistons...

[greyjasper51]

VTRBP285R piper cams 10.72 on again the theoretical rocker ratio of 1.75:1

[greyjasper51]

4901202 cat cams give 11.15 lift again with rocker ratio of 1.75:1

[greyjasper51]

newman phase 3 give 10.53 IN 10.44 EX again with 1.75:1 rocker ratio

these are all for the roller rocker heads as they have a 1.75:1 lift ration rather than the slipper type rockers with have a 1.4:1 rock ratio...

[greyjasper51]

kent cams PT41

12.03mm Inlet/Exhaust again on the 1.75:1 roller rocker

[m4tt274]

i wouldnt put the money into it if im being honest.
a raceland manifold, supersprint/saxport or other exhaust system, a K&N and a good service will see you near to the engines peak practical potential.

as for the VTS conversion, do it, but expect 10mpg less and less midrange power but a smoother engine and more top end.

[doncarlyon]

Turbo it!!!

[jamie281093]

cheers for all the info. but seems like i would have to spend a lot to get from 90bhp to 120bhp without doing a vts conversion? am i right in thinking i could do a vts conversion for about 350? what sort of work would be envolved and what would i need with the engine? not sure what to do tbh without spending silly money. got a bit of time to think as wont be until next spring i get to do somthing for it :(

[greyjasper51]

Stick with what you got... If you wanna mod it, sort the suspension, tyres, brakes out first... Itll make the engine bit seem faster (although its not) its more capable of having fun :-)

[jamie281093]

trouble is..i get bored easily lol