which vts manifold is best. 4-1 or 4-2-1?

[spencer_cammedvts]

im looking to but a new 4 branch manifold for my VTS. but i dont know whick will be best for my engine. iv got a vts engine with kent cams, relocated piperx induction kit, de-cat pipe. straight through centre section and a powerflow backbox so think im runing about 145/146bhp. now at the minute all my power seems to be from 4500rpm onwards to about 7000rpm.

can anyone help/advise me in weather to get a 4-1 manifold or a 4-2-1 manifold to get the best gains with the mods i already have? which manifold will give low down power and whick will give power higher in the revs.

also do you think i should have all the power high up or should i get whichever manifold will give me low down power to even things out throughout the rev range? in looking to order one tonight off the net so that it will be with me next week so all help would be much appreciated!

cheers,
Dan

[ets2k9]

4-2-1 as they encourage the power lower down the revs, I have a Raceland fitted.

[spencer_cammedvts]

do you think i should have a bit more low down power then or get some more high up power so that i get a mint rolling road print off of around 160bhp?

[ets2k9]

VTS have all there power at high revs so anything you can do to get abit more low down is a bonus.

That was my logic anyway.

You'll get a mint rolling road print out either way.

[bullit]

4-2-1. it frees it up low down no end

[b0t13]

4-2-1 as thatll need improving

[Ryan]

160 bhp from what?? are you running cams for this?

the debate is allways on as what is better. 4-1 vs 4-2-1 it can depend on to many things, what cams you are running for a start. gmc will argue a 4-1 is better, and this is probably true for higher up the rev range on a car such as a tbd 16v monster revving to over 8k.

a good option atm tho is get on the ssc group buy raceland 4-2-1 for 130 :D

[zaine]

ryan - am selling the gmc/btb manifold if ur interested :D:

pm me on ssc if u want ne more info dude

[spencer_cammedvts]

160 bhp from what?? are you running cams for this?

the debate is allways on as what is better. 4-1 vs 4-2-1 it can depend on to many things, what cams you are running for a start. gmc will argue a 4-1 is better, and this is probably true for higher up the rev range on a car such as a tbd 16v monster revving to over 8k.

a good option atm tho is get on the ssc group buy raceland 4-2-1 for 130 :D

yes as a matter of fact im running kent cams

[Ryan]

kent cams?? im guessing pt-51s??

i would doubt you would get 160bhp..

maybe 150-155.

what other mods are you intending on buying..
only ones you should go for tho imo are the gmc 4-1 or raceland.

zaine lol nein dont need a new fannymould atm :P

[spencer_cammedvts]

ner pt-50's mate.

total engine mods at the mo:
relocated piper-x,
powerflow backbox,
straight through centre section,
magnex de-cat pipe,
pt50k kent cams with remapped ecu and 7250 rev limiter


next week i will be getting my s/s 4-2-1 manifold

then my port and polish and then ill get a further remap and see what i can get.

im hoping that will see me to damn near 160 ill be pretty pi**ed if it dont with all the money spent!

im watching a gnc 4-1 on ebay at the mo. might put a bid on that. its got a couple of big dents i it but i got a good compressor so might bid on it and blow the dents out.would prefer a 4-2-1 though

[spencer_cammedvts]

160 bhp from what?? are you running cams for this?

the debate is allways on as what is better. 4-1 vs 4-2-1 it can depend on to many things, what cams you are running for a start. gmc will argue a 4-1 is better, and this is probably true for higher up the rev range on a car such as a tbd 16v monster revving to over 8k.

a good option atm tho is get on the ssc group buy raceland 4-2-1 for 130 :D

im not a member of ssc but would love a raceland for £130! whats the postage on em? and does it cost anything to become a standard member on SSC?

[Ryan]

no to become normal member you dont pay.. Fullchatgarantueed on there in engine section organises em!

also with pt50s and the work you have said... good luck getting 160¬

xonsidering theyre mild cams! and a car on catcam 708s ony generally gets 155-160.

also your mods are not power mods, (poOOOerflow backbox and relocated piper x) you should get a full system (i know you have a center section upgrade)

your going for a port n polish which is good but id get a better set of cams first before a remap.

you will need to get an enclosed airbox to gain full advantage as engine bays in saxos get hot

soz if it sounds harsh i may be wrong but i dont want you getting your hopes up of hitting 160 when theres a high chance you wont.

i know of an engine with the spec of, 40mm jenvey tbs, omex standalone, and pugsport cup cams that only makes 155-157bhp and that was when running a btb etc....

[spencer_cammedvts]

i got told that they were pt-50's ill have to check as the lad i bought it off bought the engine from a breakers in manchester for a conversion the same as me but got caught and he hadnt told the insurance so decided to sell. they should have the part number stamped onto the end shouldnt they? if not where is the part number mate? the guy i got the engine off bought the engine allready cammed and with his mods got a r/r of 153bhp. like i said il see if i can get the print off. and as for the enclosed iv got plans of stripping out the front left headlight on a set of morrets to get loooaaads of cold air in

[Ratty]

without even reading the thread, it all depends on how you want to drive the car, whats the spec of your cams? as you normally design your engine around the spec the choose the exhaust system depending on the cams you have e.g what the cams can give you. So work that out and your on your way.

[Ratty]

without even reading the thread, it all depends on how you want to drive the car, whats the spec of your cams? as you normally design your engine around the spec the choose the exhaust system depending on the cams you have e.g what the cams can give you. So work that out and your on your way.

[Ryan]

you will need to do a few RR runs on diff roads tho, as you get alot of varying results from diff roads, some may give you silly power figures either high or low :P

im not sure where it would be on the cams to see where they are marked as i have not looked at a set of cams out of the car close up in that much detail.

theyre not bad cams dont get me wrong, just stating like before dont want you to feel let down if you dont reach the figure you want.

[bullit]

itsasafefastworld. (i know of a engine) that wouldnt be yours would it, lol.
also agree with 160 on a pt50, its not gonna happen. that is fair

[Ryan]

know it was fmps on the ssc forum running that spec.

[spencer_cammedvts]

il have a look at the cams and see or il get a vernier on them and measure the size of the lobe then il be able to tell. on most sites that pt50's are advertised it states a gain of 22bhp but i dont know if mine are pt 50's and dont know if thats just kent being a bit optimistic with the figures!

[bullit]

i know it was, i thought you bought it off him

[Ryan]

u can never give a generic figure to say a certain part will give said bhp :P

who said i had matts engine?

[droopster]

LOL so much about a conversation of the manifold.lol. I would go for the Raceland one. I am getting one of them soon. You can pick them up off ebay for £150 inc pnp.

[spencer_cammedvts]

sound cheers mate

[Ryan]

or as i stated get on ssc and get one for 130 in p+P