IHI POWER!! Booked in at Jabba

[Songman]

luckily enough i bought mine 2nd hand,when i had the dahlback mani fitted i visited mrc to get them to see if it made any difference! unfortunately it didn't they claim 10-15bhp gains don't they? utter rubbish then ordered the ross one now.

Deffo a good move considering your big power project! - did you source it from `bobqzzi` at QED?

 

[ibizacupra]

I`ve been following that Vortex thread too Bill - very interesting - things move on, so guess the Dahlback is old hat now. There`s always something new.

No wonder DB is discounting them! - least it flows the same as stock, and looks nice polished

Back to the drawing board with yours?

i had one way back, looked at it, trial fitted it, it did'nt fit ibiza due to bonnet clearance, and woulod never port to fully big port like they said it would. It got returned. The aspect i liked the idea of was dual plenum and its equal filling ability, but its equal filling is also a restriction by definition.. For total flow, high flow, then more is required. The lehmann design which dahlback use was motorsport derived, and as such FIA regs clamps down on intake restrictors, 34mm currently on WRC, so its design premis as such does'nt neccessarily match our unlimited cars. It does flow the most equal of the small port versions tho, but I was surprised how little more it flowed over even a stock mani.

I have replaced my pro-alloy/JS dual plenum (largeport, dahlback inspired) mani, and seen significant gains from this alone. We want flow from our motors, boost is just a means of pumping it through, although some people fixate on more boost more boost, and forget total flow is what makes more power.

Its a case of having all the parts sized to the appropriate airflow you are running.

As it happens, as mine was one of the first to be made for me, I run the largeport 007 mani, with R32 throttle body, and am very happy with it. The flow bench results are indicitive of its potential to flow well, but not the be all and end all in it being the highest bhp intake on a given spec motor (which is muchos variable) - for me 32bhp and 22lbft were gained from this manifold alone, over the largeport dual plenum i ran before it.

Was'nt a back to the dwg board, i could have stuck with it, but my gut feel was it was holding the motor back. Consequently proved to be the case and allowed the motor to break into the 500+ level

 

[rashcupra]

im booked in for the IHI uprated turbo and clutch on the 26th am so excited my wallet is empty tho

 

[Songman]

i had one way back, looked at it, trial fitted it, it did'nt fit ibiza due to bonnet clearance, and woulod never port to fully big port like they said it would. It got returned. The aspect i liked the idea of was dual plenum and its equal filling ability, but its equal filling is also a restriction by definition.. For total flow, high flow, then more is required. The lehmann design which dahlback use was motorsport derived, and as such FIA regs clamps down on intake restrictors, 34mm currently on WRC, so its design premis as such does'nt neccessarily match our unlimited cars. It does flow the most equal of the small port versions tho, but I was surprised how little more it flowed over even a stock mani.

I have replaced my pro-alloy/JS dual plenum (largeport, dahlback inspired) mani, and seen significant gains from this alone. We want flow from our motors, boost is just a means of pumping it through, although some people fixate on more boost more boost, and forget total flow is what makes more power.

Its a case of having all the parts sized to the appropriate airflow you are running.

As it happens, as mine was one of the first to be made for me, I run the largeport 007 mani, with R32 throttle body, and am very happy with it. The flow bench results are indicitive of its potential to flow well, but not the be all and end all in it being the highest bhp intake on a given spec motor (which is muchos variable) - for me 32bhp and 22lbft were gained from this manifold alone, over the largeport dual plenum i ran before it.

Was'nt a back to the dwg board, i could have stuck with it, but my gut feel was it was holding the motor back. Consequently proved to be the case and allowed the motor to break into the 500+ level

Nice one Bill - obviously makes a big difference - mine will do for now but i`ll probably change it when I do a `refirb`, maybe next year.

 

[Songman]

im booked in for the IHI uprated turbo and clutch on the 26th am so excited my wallet is empty tho

Come on down!!!

 

[rashcupra]

whats a safe bhp and torque setting to go on my 1.8 20vt mk4 you guy seem to know your turbos dont wanna do internals yet

 

[rashcupra]

i was hoping for 310-320bhp and 310 lb ft is this a likely figure or could i push more??

 

[Yumann]

Yumann - you seen the flowbench results for the dahlback mani?

Yes Not impressed at all consider the money it cost me

I'm considering going for a small port 007p.

 

[Yumann]

Impressive spec there Yumann, what sort of power and torque are you hoping for once BT? Any figure in mind?
You seemed to have uprated or going to uprate everything!
I dont blame you though, as there is no point in cutting corners.

I want at least 400bhp but aiming for 450. The criteria for the turbo is it must be off the shelf, good spool and the possibility to go bigger.

Heres my options:

gt3071r .63a/r with T25 flange and int wg. Doubt it will make 450 and no option to go bigger unless just changing the housing to .86a/r. Want to keep ar as low as possibly for road car.

gt3071r .63a/r with T3 flange and ext wg or gt30r .63 T3 flange and ext wg. Ideally i would like internal wg for simplicity but an't going to happen for the power i want.

 

[aidy.t]

im booked in for the IHI uprated turbo and clutch on the 26th am so excited my wallet is empty tho

Well done! you wont regret it. Money well spent.
Whos doing the BT conversion?

 

[ibizacupra]

I want at least 400bhp but aiming for 450. The criteria for the turbo is it must be off the shelf, good spool and the possibility to go bigger.

Heres my options:

gt3071r .63a/r with T25 flange and int wg. Doubt it will make 450 and no option to go bigger unless just changing the housing to .86a/r. Want to keep ar as low as possibly for road car.

gt3071r .63a/r with T3 flange and ext wg or gt30r .63 T3 flange and ext wg. Ideally i would like internal wg for simplicity but an't going to happen for the power i want.

If planning bigger power levels, T25 flange is not what you want... T3 is going to be the one. Larger turbine housing and T25 flange is not ideal is it.
Externally gated, on higher flow compressors will be the best way to go, if you can package it all in to fit. more money tho
I know my internally gated turbo is max'd on its wastegate flapper (ported big time) to avoid previous boost creep. 50trim compressor on mine, any more and creep is going to be inevitable I think.

 

[Songman]

your alright mate ... i drive like a granny . and wear dark trousers


scuse my ignorance fellas but this aquamist system. im trying to understand it.

which sensor tells the euc the air temp? i thought it was the maf but cant be as aquamist cools the fmic? and thats post maf? sorry if its obvious

The temp of the inlet charge has a direct bearing how well your engine will perform - in general with standard setups, the AIT is well controlled and there is nothing to be worry about.

If you try to extract more power - running the turbo harder into areas of reduced compressor efficiency with poor /restrictive intercooling ect, the AIT can start to rise markedly, reducing power, ultimately offering the potential to cause engine damage by precipitating the detonation of the inlet charge, as opposed to the normal circumstance of controlled combustion.

Here`s a rough indication of power loss vs intake temp.

Intake Temperature Power Loss Example Power Output.

20oC 0% 200bhp
40oC 3.5% 193bhp
60oC 7% 186bhp
80oC 10% 180bhp
100oC 13% 174bhp

The Aquamist system provides a defence against the possibility of `meltdown`, due to detonation provoked by too high AIT.

It consists of a small pump which pumps water from a supply - [in my case the windscreen washer bottle] - into the inlet tract , through a fine jet - in my case, the jet is inserted between the intercooler discharge and the inlet manifold.

The pump is wired to a pressure switch.
At a predetermined boost pressure, the pump is activated, and water is forced by the pump into the inlet tract, at high pressure, in the form of a fine mist - a choice of jets is provided with the kit with which to manage the flow rate of the water.

The injected water turns to steam, and is carried along with the inlet charge into the cylinder where it inhibits the rate pressure rise of the combusting mixture of gasses, and thus wards of the possibility of detonation - it dampens the fire so to speak!

Aquamist have a great site where you can read more.

http://www.aquamist.co.uk/

hope this helps

 

[rashcupra]

Well done! you wont regret it. Money well spent.
Whos doing the BT conversion?

im booked in at jbs next week should get it back in a week but afaik no1 has done a BTC on the mk4 ibiza cupra so they are bound to hit a problem of some sort so could take longer what sort of figures should i be aiming for safeish withoutfecking up internals 330lb ft + 350bhp? im geting uprated clutch too!

 

[Songman]

im booked in at jbs next week should get it back in a week but afaik no1 has done a BTC on the mk4 ibiza cupra so they are bound to hit a problem of some sort so could take longer what sort of figures should i be aiming for safeish withoutfecking up internals 330lb ft + 350bhp? im geting uprated clutch too!

You`ll find 330~350 bhp in the Beeza plenty enough to sharply focus your mind, believe me! - unless you`re the next Lewis Hamilton! - and there`s not many like him about!

Be guided by JBS regarding the final output - they`ll keep you right.

 

[rashcupra]

my problem is i get bored exstreamly quickly and want more power hopefully this is enough to keep me happy how much roughly does pistons valves and rods cost? as eventually i hope to get these changed?

 

[aidy.t]

my problem is i get bored exstreamly quickly and want more power hopefully this is enough to keep me happy how much roughly does pistons valves and rods cost? as eventually i hope to get these changed?

You certaintly wont get bored, trust me, it is great fun, especialy in a little ibiza!
If you do want more then rods should set you back roughly £500 plus valves at again about the £500 pound mark for a set of supatech valves. Im going on Jabba prices so if you shop around you might get them cheaper. I dont know with the pistons as they are different to mine so not too sure on there limits. I know mine are good for around the 400bhp mark. With this little lot done it should be good for around the 370bhp mark! Is it the VF34.20 IHI unit your going for?

 

[rashcupra]

to be totally honest im not sure ^^^^^ will eventually do the internals but this will do for now hopefully being an exstremly light front wheel drive car

 

[aidy.t]

to be totally honest im not sure ^^^^^ will eventually do the internals but this will do for now hopefully being an exstremly light front wheel drive car

Defo, it will shock you and others on the road I rekon you should acheive around the 330bhp mark and the same torque, 330lbft. Any more than this and you will be pushing the rods to there limit. This is one area i will be improving on when funds allow. I already have the full set of valves so i am just waiting on getting the cash together to enable me to book it back into Jabba for them to supply and fit the rods, flow the head and inlet manifold and also to fit the valves. Then fingers crossed 370bhp and 370-380lbft of torque after yet another remap.

 

[rashcupra]

obviously not enough power then if your wanting to do this so soon after

 

[aidy.t]

obviously not enough power then if your wanting to do this so soon after

I just want it to be reliable and i cant afford it to go bang! Its just a piece of mind knowing that everything is up to the job. The power where it is now is more than enough for road use. I already have trouble putting it down. Its the quickest car i have ever owned!
My wife hates it, it makes her feel sick!
Problem is once you get the bug for power, you cant stop!!!