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Author 4-1 manifold (X1.6XE)
axel156
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Registered: 3rd Oct 05
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15th Nov 05 at 18:39   View User's Profile U2U Member Reply With Quote

I'm from Holland and i'm looking for a 4-1 manifold (X1.6XE) for power in the higher revs Risse is an German Opel tuner and they can't deliver it anymore.

I found this site http://www.tuning.co.uk/vauxshop/ and i saw an 4-1 manifold. But it has cheap looks, somebody has this manifold?

Axel
5chaap2k
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Registered: 20th Apr 05
Location: Schiedam, Netherlands
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15th Nov 05 at 22:57   View User's Profile U2U Member Reply With Quote

for the records, he allready has a 4-2-1 branch manifold and wants to switch to a 4-1
broster
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Registered: 6th Dec 02
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16th Nov 05 at 08:16   View Garage View User's Profile U2U Member Reply With Quote

to be honest i wouldnt bother swapping, you will loose marginal mid ranger power and gain marginal top end power, the loss of the mid range will be more noticable than the gain in the top end, if you can notice it at all.
5chaap2k
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16th Nov 05 at 09:46   View User's Profile U2U Member Reply With Quote

he has too much midd range power and wants to loose some there and gain on top end

the car is to nervous and he cant roll a 1/4mile in 3th gear anymore.. it's blowing away his 1/4 times..

however i think it would be better to save the money and go for TB's and OMEX mm
Sly_SRi
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Registered: 9th Apr 04
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16th Nov 05 at 09:51   View Garage View User's Profile U2U Member Reply With Quote

What bhp is his engine??


Corsa C Z20Let

Black Sleeper Turbo Project
5chaap2k
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16th Nov 05 at 13:26   View User's Profile U2U Member Reply With Quote

approx 160bhp

this is a graph before the rebuild:


after the rebuild and some head-work (for midrange/torque) the max torque comes much earlyer resulting in a nervous ride

4-1 manifould would cause him to loose some in midd-range and gain some in high revs, thats what he wants

so any one know some 4-1 manifolds for the x16xe exept risse(germany)
5chaap2k
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16th Nov 05 at 13:35   View User's Profile U2U Member Reply With Quote

the vauxshop manifold is awfully cheap :/

converted it'l com around 245,72 euro's ex shipment/taxes/etc.

doesn't look quite relyable on the pictures..

anyone got this manifold?



Corsa & Tigra 1.4/1.6 16v Ecotec Exhaust Manifold
159.00

Four branch tubular performance exhaust manifold from Sportex. The manifold replaces the standard restrictive cast iron manifold and the standard downpipe. The manifold can be fitted either to the standard cat or the Sportex cat replacer. Please note that when this manifold is fitted the EGR system is disabled.

SPV120100
broster
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Registered: 6th Dec 02
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16th Nov 05 at 15:45   View Garage View User's Profile U2U Member Reply With Quote

i had a sportex on my mk3 astra, when i removed it i gained 4bhp lol
broster
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16th Nov 05 at 15:46   View Garage View User's Profile U2U Member Reply With Quote

167bhp without throttle bodies! how!? whats he done to it?
axel156
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16th Nov 05 at 17:17   View User's Profile U2U Member Reply With Quote

162bhp corrected power!!!
axel156
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16th Nov 05 at 17:29   View User's Profile U2U Member Reply With Quote

rebuild X1.6XE engine
156,12PS at 6800rpm and
172Nm at 4000rpm

1620CC first oversized bored
Flowed Cylinderhead (mid-range)
Mantzel Powerbox
Mantzel Chip (made on rollingbank)
264 Schrick Cams
4mm bigger throttle plate
Power Boost Valve
Twister filter
4-2-1 Lexmaul Exhaust Manifold
Supersprint cat replacer
Simons Group A midpipe
Mantzel Group A back exhaust


[Edited on 17-11-2005 by axel156]
5chaap2k
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16th Nov 05 at 17:44   View User's Profile U2U Member Reply With Quote

the dutch x16xe's are faster then the uk ones lol

broster
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17th Nov 05 at 09:50   View Garage View User's Profile U2U Member Reply With Quote

pahhhhh, get it on our rolling roads and get a proper read out lol!

joke

good power but i still dont htink youll gain anything with putting a 4-1 manifold on, i say spend the money on better suspension set up and tyres.... you have been playing with tyre pressure and suspension stiffness i take it to get the launch better
Dave A
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17th Nov 05 at 23:56   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by broster
167bhp without throttle bodies! how!? whats he done to it?


if you look at the graph, i think you will agree it is not a 'real' figure. ive always prefered using the 'power at wheels' figure as that is far more accurate. the power at engine figures are a guestimate of the power as its impossible to work out how much drag and power loss there is through a gearbox. therefore the power at the engine figure is never 100% correct. calculating using drag is never accurate.

if it is them my x16xe would be producing 187 bhp at 7500 rpm, but its not

look at the graph again, the power at the wheels is only 102 bhp, yet its producing 167.5 Nm of torque (125 lb/ft)

also, a x16xe wont do 229 kph (142 mph) at 7600 rpm on a power run on a dyno unless you are testing in 5th


either the way they calculate power in other countries is different or our european friends know something we dont
RobHayes
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18th Nov 05 at 04:32   View User's Profile U2U Member Reply With Quote

mine had a whole 89BHP at the wheels, and it was a serious oil burner. i worked that out to be around 120-125bhp at the flywheel, but purely guesswork
5chaap2k
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18th Nov 05 at 07:08   View User's Profile U2U Member Reply With Quote

no dutch x16xe's are better hahaha!

we should visit a UK event sometime next summer.. and if there's some time put it on the rollers there
broster
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18th Nov 05 at 08:24   View Garage View User's Profile U2U Member Reply With Quote

quote:
Originally posted by corsa808
quote:
Originally posted by broster
167bhp without throttle bodies! how!? whats he done to it?


if you look at the graph, i think you will agree it is not a 'real' figure. ive always prefered using the 'power at wheels' figure as that is far more accurate. the power at engine figures are a guestimate of the power as its impossible to work out how much drag and power loss there is through a gearbox. therefore the power at the engine figure is never 100% correct. calculating using drag is never accurate.

if it is them my x16xe would be producing 187 bhp at 7500 rpm, but its not

look at the graph again, the power at the wheels is only 102 bhp, yet its producing 167.5 Nm of torque (125 lb/ft)

also, a x16xe wont do 229 kph (142 mph) at 7600 rpm on a power run on a dyno unless you are testing in 5th


either the way they calculate power in other countries is different or our european friends know something we dont


wheel figure/flywheel figure, no figure is going to give an exact power on the road, even a dyno as there is no cold air etc! so any figure is good and seems most people quote flywheel figures then thats a good one to work out. the rolling road works out the drag from the transmission and stuff, so if the road is calibrated regularly you will get a pretty good realistic figure. wheel figures are good but not many people get them so its a bit hard to compare. also the rolling road really is about the shape of the graph.

lol, 5chaap2k, do it, or we should come over to you to admire the euro-ness
5chaap2k
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18th Nov 05 at 17:03   View User's Profile U2U Member Reply With Quote

want to shake my right-shifting-hand right?
5chaap2k
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23rd Nov 05 at 23:23   View User's Profile U2U Member Reply With Quote

he found his problem!

after the rebuild he used a x14xe head and got it ported/polished

we just found out that the inlets on the x14xe head are 49mm wide
on the x16xe head they're 55mm wide!

this explains his lost in bhp's and gain in torque!

he exchanged the inlet from the x14xe for a x16xe now and allready has more power at high revs again!

picts to prove:
X14XE (+/- 48mm)

X16XE (55mm)
5chaap2k
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23rd Nov 05 at 23:25   View User's Profile U2U Member Reply With Quote

and the inlets:

x16xe:


x14xe:
broster
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24th Nov 05 at 10:52   View Garage View User's Profile U2U Member Reply With Quote

now theres an interesting fact! so this is official the heads on the x14 and x16 are different!
5chaap2k
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24th Nov 05 at 11:23   View User's Profile U2U Member Reply With Quote

yes and placing a x14xe inlet+head on a x16xe lump gets u a nervous car with to much tourque at low rpm haha
broster
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24th Nov 05 at 11:57   View Garage View User's Profile U2U Member Reply With Quote

when you say nervous what exactly do you mean?
5chaap2k
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24th Nov 05 at 12:00   View User's Profile U2U Member Reply With Quote

continous wheelspin low rev, too much torque at low rev.. he couldn't finish 1/4mile in 3th gear anymore.. costs seconds
broster
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24th Nov 05 at 12:08   View Garage View User's Profile U2U Member Reply With Quote

ahhhh, i know the feeling

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