Cost Of Wastegate Mod?

[private9]

Hi All,

I've read the stickies, and had a bit of a search, but I can't actually find anywhere that anyone's mentioned the actual cost of the wastegate mod.

The turbo is not on the car, so I was just wondering if anyone knows the price if I take the turbo in?

Thanks,

Justin.

[mic]

Hi All,

I've read the stickies, and had a bit of a search, but I can't actually find anywhere that anyone's mentioned the actual cost of the wastegate mod.

The turbo is not on the car, so I was just wondering if anyone knows the price if I take the turbo in?

Thanks,

Justin.

250 mate

[whistler6]

between 750-1100 depending on where u take it think..... and also what machining is used I.e cnc or die grinder etc..

xr6 turbo developments are doing a deal atm, check them out

[jmi8]

Hi All,

I've read the stickies, and had a bit of a search, but I can't actually find anywhere that anyone's mentioned the actual cost of the wastegate mod.

The turbo is not on the car, so I was just wondering if anyone knows the price if I take the turbo in?

Thanks,

Justin.

Not sure if this is what you're asking for but these guys are new sponsors to the forum and have a exchange service for a modded wastegate. try the link below,

www.xr6turbodevelopments.com.au

Opps, Just read the post above properly, sorry for the echo..

Edited 21/03/08 11:33 PM by jmi8

[private9]

between 750-1100 depending on where u take it think..... and also what machining is used I.e cnc or die grinder etc..

xr6 turbo developments are doing a deal atm, check them out

Thanks for the advice all!

Whistler6, I'm assuming that's a drive-in drive-out price? Mines not on a car ATM, so I was hoping it'd be a little cheaper than that.

[private9]

Not sure if this is what you're asking for but these guys are new sponsors to the forum and have a exchange service for a modded wastegate. try the link below,

www.xr6turbodevelopments.com.au

Opps, Just read the post above properly, sorry for the echo..

Just saw your post!

Followed the link, and that's very reasonable pricing!

Thanks for the advice everyone!

[XR6 Turbo Developments]

Hi, yes we do them for $185 on a change over basis or we do yours for the same price. This price is only around until the end of the month and is exclusive to members of this forum.

We also have garrett 12psi actuators for $146 which is until the end of the month or both for $310...

Cheers,

[Nizpro]

There is considerably more to modifying the turbine housing than just die grinding the hole out and fitting a larger flapper depending on what you are trying to achieve.

Firstly with the age of the turbine housing ranging from 6 years old to new many are now cracked around the bolt holes that hold the Core [CHRA] to the housing, this is why many people find these bolts coming loose or even falling out. There are reasonably reliable fixes for this but each housing needs to be inspected and assessed before carrying out work on the housing.

Many people and companies can simply grind by one method or another the hole out and fit a larger flapper and we have seen that the results in some cases still lead to over boost conditions if the vehicle is fitted with very good exhaust and intake plumbing. I believe both Ali from BTA and Paul from Elite have experienced this with there higher powered cars when using housings from other suppliers. We also saw this type of issue early in development when doing a similar job.

Our main push with getting these housings to work very well was when we were asked by a GTP F6 customer that needed accurate boost control for the GTP Championship. As the boost limit is set at a very fine tolerance due to the rules and any over boost causes disqualification. The officials also wanted every housing machined exactly the same as they did not want a competitor to have any advantage over overs. At this point we decided to cnc machine all the housings. Being that the exhaust systems are free and that the boost limit is set at 9.3 psi accurate boost control is paramount. Without careful design of both the shape of the exhaust port hole, ours are no longer round as a round hole did not flow as much air by bass as our current shape and the selection of the waste gate actuator. The throw of the actuator is also important as most common waste gate actuators only throw 15 mm and we found that this was not enough to get the flapper far enough away from the hole for good flow.

Lastly there is another tick we do to get increased turbine flow that adds around 15 rwkws at about the 380 rwkw mark when things start getting hard.

Bottom line: Turbine housing mods including cnc machined housing with 38 mm stainless steel flapper up from 32mm, correct waste gate actuator with long travel and machine turbine housing supplied and fitted as a change over is $1180.00 this also includes new muti shim s/s turbo to manifold gasket 4 new inconnel studs and nut to prevent them from coming lose as many of you experience. Supply only change over is $780.00

No doubt these prices are more expensive than overs charge but I hope the above explanation clearly explains that there is a little more to it than break out the die grinder if you want the best possible result in boost control and increased power.

Cheers Simon

Edited 26/03/08 11:26 PM by Nizpro

[XR6 Turbo Developments]

Regardless of wheather you die grind the housing or use a CNC process to enlarge the hole ultimately you will achieve the same result which is opening up the waste gate port to enable gases to be vented more efficiently.

Being more consistent with a product YES I agree is great way to do business.

Unfortunately there are many factors such as the actuator itself that can throw that all out of balance.

Recently we re-changed a new actuator on a vehicle that was just not holding boost correctly. We used the same ported housing which was not done by us and just replaced the actuator. We then data logged the vehicle and now we were commanding 84% duty cycle instead of 100% duty cycle to achieve the same amount of boost...

And yes you are right “there is a little more to it than break out the die grinder†there is also adjusting the arm correctly to maintain a correct seal and setting the actuator pressure correctly by adjusting the rod which can not be done by any CNC machine as far as I know.

I have also been brought exhaust housings off 1 year old vehicle with "slam tunes" in them and they are cracked! A visual inspection is always done and these units are NOT accepted as change overs either.

We may not have the same budget as the larger companies do but we stand behind our products 100% and invite anyone to prove that they don’t work as well or better as competitor’s products at the same power levels.

Jim

Edited 27/03/08 07:40 AM by XR6 Turbo Developments

[Nizpro]

Sorry Jim if you took this as a shot at you as it was not meant to be. The tread asked about the cost of turbine housing modification and I believe a full explanation is needed for people to fully understand the large difference in prices from a simple port job to a fully developed modification.

“Regardless of wheather you die grind the housing or use a CNC process to enlarge the hole ultimately you will achieve the same result which is opening up the waste gate port to enable gases to be vented more efficiently”

Unfortunely, this is simply not the case as further experience will show you. Just like large gains can be made in porting a cylinder head in terms of air flow the same can be achieved with careful design and shaping of the waste gate opening.

The pricing not only refects the cost of the parts but also development time in making sure a modification works under all circumstance. As I explained, we also used similar methods earlier on but found that it still caused over boost problem on large output cars. You make mention of a actuator not holding onto boost, this is not what I have explained in fact it’s the opposite. On high kw cars the boost will actually get away from the desired boost level and sky rocket into the low 20 psi mark. This is where the extra time and effort along with a more expensive actuator is needed. I ‘m sure you will come across this in time, just as the others I have mentioned have.

Customer need to have all the information presented to them so they can understand fully why some modification are far more expensive, although on paper or in advertising they seem the same.

It is correct that some don’t need to go to the extreme levels, however Nizpro is a big believer of doing the best possible job the first time round as it is more cost effective than having to re-do it a second time if the customer choses to go further than they anticipated with their levels of modification.

I hope this clears my response up.

Cheers Simon