Another hybrid conversion thread....

im going to try and get ashley exhausts to develop a manifold down-pipe and full system and then sell them at discounted rates on here... if anybody is interested ;)
 
Well, a bit of a turn up for the books....

The car genuinely feel quicker with the ported OEM than it did with the 034.

Also, getting the same, if not slightly higher g/s readings than I was with the 034.

Not an acid test, but a good indicator. Should be on the rollers for some comparison runs on Sunday....
 
WOW, i am completely discombobulated by this result, Do you plan on doing any logs? i bet it feels nice to have her on the road again.
 
That's put a large moggy amoungst the birds that always crap on my car..

I have just sent my log mani in to be skimmed, and now i don't know whether to use it or go OEM again..

Tho i dii fit mine in an aid of keeping EGTs down, and seeing you had a glowing mani before it must have offered some resistance.

Sunday you say?
 
Welly said:
Well, a bit of a turn up for the books....

The car genuinely feel quicker with the ported OEM than it did with the 034.

Also, getting the same, if not slightly higher g/s readings than I was with the 034.

Not an acid test, but a good indicator. Should be on the rollers for some comparison runs on Sunday....
Click to expand...

Sounds good mate... I suspect the smaller runners could be helping with earlier spool giving the feeling of enhanced quickness... be interesting to see the results Sunday though.... and of course to see what colour we can get the mani to glow ;P

<tuffty/>
 
Welly said:
Well, a bit of a turn up for the books....

The car genuinely feel quicker with the ported OEM than it did with the 034.

Also, getting the same, if not slightly higher g/s readings than I was with the 034.

Not an acid test, but a good indicator. Should be on the rollers for some comparison runs on Sunday....
Click to expand...

JD09 said:
The same, based on the graphs thus far.

I take it we're taking the manifold as the only variable, and the rest constant? i.e. Bill's 3" TIP etc?
Click to expand...

Hi.

What do I win?

Thanks.
 
OK, after a brief technical hitch.... lol.... my pictures are now working again.

So for the benefit of those who missed it, here are the pics of the damaged 034 manifold:

79.jpg


You can clearly see daylight through this one when held up...

80.jpg


The second crack...
 
Last edited:
Imteyaz said:
Welly - I can't see them.....
Click to expand...

Grrrrrrrrrrrrrrrrrrr. It's not you dude, my hosting company decided to switch my hosting from Windows to Linux for no apparent reason, shagging everything completely in the process!! lol.

I shall keep working on it...

EDIT: Should be fixed.
 
Last edited:
yeah, i see them anyway, wow cracked all over the place. How loud did it blow? can you hear it really easilly?
 
Cookstein said:
yeah, i see them anyway, wow cracked all over the place. How loud did it blow? can you hear it really easilly?
Click to expand...

Yes mate, it was REALLY loud indeed. Most of the noise was coming from the crack on the top of runner 4, the first picture.

It sounded awful, which is why I wasn't hanging around in getting it done.

It's also left carbon residue all over my bonnet to give you an idea of how much gas was coming out...
 
so welly mate where are the logs of the ported oem mani? cant wait to see the results lol
 
DaveA3 said:
so welly mate where are the logs of the ported oem mani? cant wait to see the results lol
Click to expand...

Not done them as yet dude, have been off work the last 2 days and left my laptop with VCDS at work.... D'oh.

Will get them done tonight and post for all to see....
 
Wow, I can only imagine how after getting nice and hot, them cracks will expand from the heat and make a racket as a result. Seems like the only manufactures of manifolds that will last are OEM and JBS.

Cost-wise, with the OEM manifold being cheaper (and more readily available) the ported OEM manifold looks to be a winner.

Welly, I salute you - I would have sold up if it was my car a long time ago, you have persevered throughout and kept us updated with regular pics. I don't have an S3 but your thread (and attached banter within) is one of the few I keep my eye on when I'm on this forum.
 
Welly said:
Not done them as yet dude, have been off work the last 2 days and left my laptop with VCDS at work.... D'oh.

Will get them done tonight and post for all to see....
Click to expand...

sweet lookin forward to it dude!
 
Imteyaz said:
Wow, I can only imagine how after getting nice and hot, them cracks will expand from the heat and make a racket as a result. Seems like the only manufactures of manifolds that will last are OEM and JBS.

Cost-wise, with the OEM manifold being cheaper (and more readily available) the ported OEM manifold looks to be a winner.

Welly, I salute you - I would have sold up if it was my car a long time ago, you have persevered throughout and kept us updated with regular pics. I don't have an S3 but your thread (and attached banter within) is one of the few I keep my eye on when I'm on this forum.
Click to expand...

Thanks dude. What can I say, I'm just a sucker for punishment, and like a challenge.... lol.

Anyway, the dyno will be the acid test on the performance of the ported manifold.

The dyno doesn't lie at the end of the day.

Figures thus far are encouraging however, and driveability is much improved, which can only be a good thing, if it also encompasses reliability.
 
Following from SCN thread on similar subject matter..........

2277-series_competitive.jpg


also as a handy ref..
Garrett suggest 10bhp for every lb/min flow

265g/s is 35lb/min ~350bhp airflows where my dyno has seen 332bhp

Plausable!
 
That's a really interesting plot.

Off hand Bill, do you remember what Matt's A3 was putting out g/s wise, as a basis for comparison to the above?
 
audi upgrades
OK, logs as promised.

Ambient temp outside tonight is 8.0 degrees Celsius.

Results - surprising... Displayed below are Blocks 002 and 020.

Logs with 034 Manifold fitted:

Code: 
	Group A:	'002				Group C:	'020			
		RPM	Load	Inj. On Time	Mass Flow		Idle Stabilization	Idle Stabilization	Idle Stabilization	Idle Stabilization
	TIME					TIME				
Marker	STAMP	 /min	%	 ms	 g/s	STAMP	 CF	 CF	 CF	 CF
	147.11	840	23.3	2.05	4.06	146.71	0	0	0	0
	148.3	1240	45.9	3.69	10.92	147.9	0	0	0	0
	149.5	1440	52.6	3.69	13.25	149.09	0	0	0	0
	150.69	2360	77.4	5.74	36.08	150.3	0	0	0	0
	151.9	4040	177.4	10.66	153.31	151.5	0	0	0	0
	153.11	7480	187.2	15.17	264.14	152.71	0	0	0	0.8
	154.41	6040	191.7	17.63	254.06	153.93	0	0	0	2.3
	155.61	7400	188	15.17	265.83	155.21	0	0	0	2.3
	156.81	5520	191.7	18.45	245.67	156.41	0	0.8	0	2.3
	158.01	6280	191.7	18.04	258.81	157.61	3	0.8	0	1.5
	159.21	6840	191.7	16.81	264.14	158.81	3	0.8	0	0
	169.8	4480	3	0	2.97	170.59	0	0	0	0
	171.09	4160	6	0	5.64	172.1	0	0	0	0

With ported OEM manifold fitted:

Code: 
	Group A:	'002				Group C:	'020			
		RPM	Load	Inj. On Time	Mass Flow		Idle Stabilization	Idle Stabilization	Idle Stabilization	Idle Stabilization
	TIME					TIME				
Marker	STAMP	 /min	%	 ms	 g/s	STAMP	 CF	 CF	 CF	 CF
	240.99	3520	125.6	9.02	93.69	241.38	0	0	0	0
	242.41	5440	191.7	18.45	244.83	242.89	3	0	0	3
	243.8	7120	191.7	15.99	267.53	244.28	2.3	0	0	3.8
	245.08	5480	191.7	18.45	249.42	245.48	0	2.3	0	3.8
	246.28	6240	191.7	18.04	258.81	246.68	0	1.5	0	3.8
	247.48	6840	191.7	16.81	267.53	247.88	0	0.8	0	3
	248.68	7320	190.2	15.58	266.39	249.1	0	0	0	1.5
	249.99	5840	191.7	18.04	251.94	250.49	0	1.5	0	3
	251.29	6200	191.7	18.04	255.36	251.69	0	0.8	0	3
	252.49	6520	191.7	17.63	258.58	252.98	0	0	0	1.5
	253.78	6840	191.7	16.81	264.14	254.28	0	0	0	0
	255.19	7120	191.7	15.99	264.69	255.59	0	0	0	0
	256.39	5640	3.8	1.23	0.19	256.77	0	0	0	0
	257.57	5400	3.8	0	4.69	257.97	0	0	0	0

Another section from the same log:

Code: 
	Group A:	'002				Group C:	'020			
		RPM	Load	Inj. On Time	Mass Flow		Idle Stabilization	Idle Stabilization	Idle Stabilization	Idle Stabilization
	TIME					TIME				
Marker	STAMP	 /min	%	 ms	 g/s	STAMP	 CF	 CF	 CF	 CF
	118.65	3920	55.6	3.69	62.17	117.84	0	0	0	0
	119.95	4800	191.7	17.63	213.28	119.15	0	0	0	0.8
	121.36	5840	191.7	18.04	254.92	120.46	3	0	0	0.8
	122.65	6560	191.7	17.63	260.25	121.85	3	0	0	0.8
	123.87	7080	191.7	15.99	268.08	123.05	2.3	0	0	0
	125.24	5720	191.7	19.27	265.94	124.35	2.3	0	0	0
	126.55	6120	191.7	18.04	256.64	125.64	0	2.3	0	3.8
	127.85	6480	191.7	17.63	261.44	127.05	0	2.3	0	3.8
	129.07	5040	1.5	0	0.22	128.25	0	0.8	0	3.8

As can be seen here, the OEM manifold is consistently flowing more air then the 034 manifold, with similar timing pull.

Discuss....
 
I'm totally dumbfounded, basically the highflow mani is/was a red herring. From the looks of the your OEM ported manifold is performing the same if not better, you mentioned the turbo can spool faster/lower down due to the smaller runners, this in itself is a great benefit and from the logs its not choking up top either!

Is there anyone that can hook you up with an EGT gauge this would be the icing on the cake really.
 
I have a non-contact IR thermograph I could use onto the manifold, but I have no reference data not having tried this on another. Wellys k04 does'nt have egt bung
 
RobbieRolex said:
Is there anyone that can hook you up with an EGT gauge this would be the icing on the cake really.
Click to expand...

Sadly not mate, there isn't anywhere to put it.

Can go on two things, firstly the glow of the manifold, and secondly the timing pull. Higher EGTs would normally come with more pull.

There isn't any.
 
badger5 said:
I have a non-contact IR thermograph I could use onto the manifold, but I have no reference data not having tried this on another. Wellys k04 does'nt have egt bung
Click to expand...

What color was the mani, this can be an indication of heat range.Still this is some result.Anyway when Welly gets his WMI, they should be in the 800's like mine are, with a bit of luck

Anyone wanna buy a part used 034 manifold, LOL
 
It will be interesting to see how Morgan gets on when he's complete on his TT with TSR manifold and same spec hybrid.
I think I may be seeing a JBS k04 mani come by here at some point also for comparison also
 
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