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Author Small block inlet manifolds
Warren G
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Registered: 14th May 06
Location: Kent
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21st Oct 07 at 19:31   View User's Profile U2U Member Reply With Quote

after having every single type of inlet manifold for the x14xe/x16xe engines apart from the velo and dbalis one (similar to the mantzel), i have come to the conclusion;

mantzel powerbox - is great for high reving driving, but NEEDS to rev to 7250rpm to make it worth while, as the power only kicks in after 5000rpm, so with the standard rev limiter you drop out of the power and have to wait for it to pick up again. So is pointless without a higher rev limit due to by the time you hit the powerband the person you are racing has already pulled away out of the corner with lower down grunt.

Lexmaul inlet - kicks in at 4000rpm and gives smooth power to the rev limiter. and has abit of low down grunt too, to save dropping a gear. Isnt much better than the standard inlet though.

Standard inlet - gives smooth power to over 6000rpm with a few other mods, and picks up well at low revs. And sounds the best!!!

The only way to get the most out of the lexmaul is to have it remapped to gain the most out of it. and the mantzel to have a remap with a 7250rpm+ rev limiter. with out the remap you will notice minimal difference from the standard inlet to the lexmaul. and you will have flat spots with the mantzel

best mod, and cheapest for the x14xe - fit a x16xe top inlet as the ports are 5mm bigger and add a few bhp (thats what im currently running)


what do other people think?


[Edited on 21-10-2007 by warren.g]
Simon_16v
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Registered: 14th Aug 06
Location: Yorkshire
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21st Oct 07 at 19:34   View User's Profile U2U Member Reply With Quote

Which bit is the top inlet?
willhouse
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Registered: 11th Jul 06
Location: Sheffield
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21st Oct 07 at 19:35   View User's Profile U2U Member Reply With Quote

what about the DBilas????
Warren G
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Registered: 14th May 06
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21st Oct 07 at 19:38   View User's Profile U2U Member Reply With Quote

sorry forgot about that one
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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21st Oct 07 at 19:39   View Garage View User's Profile U2U Member Reply With Quote

IMO, the standard inlet is crap, doesn't give smooth power (I did have a graph to show that, but can't find it) it was also shit with a raised rev limit.

The Lexmaul was FAR better, but you only notice it if you go from the Lexmaul back to a standard one, not the other way round, it gave more power at all points through the revs, and was still pulling at 7200rpm as well as being better low down.

Never had a Mantzel, so I can't comment.
gavin18787
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Registered: 22nd Feb 05
Location: Basildon, Essex
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21st Oct 07 at 19:40   View Garage View User's Profile U2U Member Reply With Quote

wasnt a fan of the lexmaul then?


Drives supercharged Tec with torque
Adam-D
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Registered: 11th May 02
Location: Cheshire
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21st Oct 07 at 19:47   View User's Profile U2U Member Reply With Quote

hang on, so if you fit a x16xe upper inlet to a x14xe it makes it faster?
Warren G
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21st Oct 07 at 19:49   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Robin
IMO, the standard inlet is crap, doesn't give smooth power (I did have a graph to show that, but can't find it) it was also shit with a raised rev limit.

The Lexmaul was FAR better, but you only notice it if you go from the Lexmaul back to a standard one, not the other way round, it gave more power at all points through the revs, and was still pulling at 7200rpm as well as being better low down.

Never had a Mantzel, so I can't comment.


i have just down graded from a lexmaul to a x16xe upper inlet on a x14xe, and found still pulls every well, all the way to the limiter and was smooth, yes the lexmaul had abit more kick, but not alot. the mantzel had a kick, but was at 5500rpm!

bearing in mind i already have a 4-2-1 manifold,decat and full system.



quote:
Originally posted by gavin18787
wasnt a fan of the lexmaul then?


nothing great tbh, mantzel was the best, but need a remap and high rev limit
Warren G
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21st Oct 07 at 19:50   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by SRi_Si
Which bit is the top inlet?


all depends on how you intend to drive the car and how far you want to go

quote:
Originally posted by Adam-D
hang on, so if you fit a x16xe upper inlet to a x14xe it makes it faster?


cant say for 100%,as iv got from a standard x14xe inlet to a mantzel to a lexmaul to a x16xe upper inlet


but the theory is there, if the lexmaul can add power making the upper inlet a different shape but keeping the standard 6ft of inlet, fitted a larger ported inlet off a x16xe to a x14xe will have some sort of effect.




one thing i did notice - the lexmaul ports are x14xe size, (where it bolts onto the lower inlet) where as the manztel were x16xe size. So there a restriction on the lexmaul if fitted to a x16xe!!!!

[Edited on 21-10-2007 by warren.g]
Robin
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Registered: 7th Jan 04
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21st Oct 07 at 19:55   View Garage View User's Profile U2U Member Reply With Quote

quote:
Originally posted by warren.g
bearing in mind i already have a 4-2-1 manifold,decat and full system.



Ah, I didn't when I went back from Lexmaul to standard with the first Lexmaul.
Pasky 666
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Registered: 10th Dec 06
Location: Sittingbourne Kent
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21st Oct 07 at 19:56   View User's Profile U2U Member Reply With Quote

i am putting my car up for sale!!!!!!
Warren G
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21st Oct 07 at 20:00   View User's Profile U2U Member Reply With Quote

no your not


if you are im taking it to bits while you sleep
Pasky 666
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21st Oct 07 at 20:02   View User's Profile U2U Member Reply With Quote

what shall i do with it
Adam-D
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Registered: 11th May 02
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21st Oct 07 at 20:06   View User's Profile U2U Member Reply With Quote

right so, whats the part number for the x16xe upper inlet.
i have 2 here dont know what exactly what 1 of them is from
jr
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21st Oct 07 at 20:16   View User's Profile U2U Member Reply With Quote

disagree totally lexmaul opinions
Warren G
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21st Oct 07 at 20:22   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Adam-D
right so, whats the part number for the x16xe upper inlet.
i have 2 here dont know what exactly what 1 of them is from


have AU on the inlet as aposted to AB on the x14xe, but ther could be other codes as well

quote:
Originally posted by jr
disagree totally lexmaul opinions


was my opinion

but i have other modifications, maybe with standard exhaust system the lexmaul makes a bit difference

whats your opinion?
jr
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21st Oct 07 at 20:26   View User's Profile U2U Member Reply With Quote

i went from having a mantzel on a 136bhp 1.4 16v with BTB manifold, Omex ECU and really good head spec, to 1.6, same head, and janspeed manifold

found the Lexmaul to be better everywhere, with the mantzel had a 7800 rev limit, and standard with the lexmaul, which pulled from 3.5k to the limiter, and felt more torqey through the rev range, much much better than standard
gavin18787
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Registered: 22nd Feb 05
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21st Oct 07 at 20:56   View Garage View User's Profile U2U Member Reply With Quote

Scott why are you thinking of selling your car


Drives supercharged Tec with torque
Pasky 666
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21st Oct 07 at 20:59   View User's Profile U2U Member Reply With Quote

it is doing my head in at the moment
Warren G
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21st Oct 07 at 21:05   View User's Profile U2U Member Reply With Quote

shhhhhhhhhh,if you keep going on, il tell everyone what happened today!!!


needs a remap thats all, then the fueling will be sorted out




[Edited on 21-10-2007 by warren.g]
gavin18787
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Registered: 22nd Feb 05
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21st Oct 07 at 21:05   View Garage View User's Profile U2U Member Reply With Quote

So is mine but i love it really

Plus all the other stuff i want I cant insure reasonably at the moment


Drives supercharged Tec with torque
willhouse
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21st Oct 07 at 21:07   View User's Profile U2U Member Reply With Quote

ive not tried any of the others, but the DBilas i had on my standard X16XE was really really good i found. none of this loss of torque bollocks, if felt to perform exactly as the standard manifold up to just over 4k, and then after that it would really perform very well all the way to the limiter as i found that it revved that quickly i would clip the limiter now and again.
davey_jack
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Registered: 28th Jan 06
Location: Horley, Surrey Drives: Clio 182
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21st Oct 07 at 23:44   View User's Profile U2U Member Reply With Quote

I've got an x16xe inlet on mine anyway, I didnt know they had bigger ports, now have mantzel. I think the mantzel's great has an awesome sound and just releases top end power, up to 5000rpm the car feels the same to be honest.
Vaux Lad
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Registered: 15th Dec 04
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22nd Oct 07 at 00:03   View User's Profile U2U Member Reply With Quote

The standard inlet produces a totally smooth power curve, as it should seeing as vauxhall mapped the engine for that type of inlet. Its only when people start adding different exhaust manifolds etc that the power starts getting flat spots etc.

My RR graph is completely smooth at peaks at about 6000rpm with the standard inlet.

Ive never drove one with a mantzel or lexmaul so cant comment. But from what ive read, Lexmaul is better all round.

[Edited on 22-10-2007 by Vaux Lad]
broster
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Registered: 6th Dec 02
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22nd Oct 07 at 06:03   View Garage View User's Profile U2U Member Reply With Quote

i htink comparing them on standar dmaps is pointless, your giving the car more air and not altering the map to suit!

with a map change the lexmaul is awesome, much prefered it to the remapped manzel car iv driven.

if i was doing it again id get a lexmaul

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