What Engine for 500BHP

What Engine for 500BHP

Author
Discussion

stevieturbo

17,229 posts

246 months

Friday 14th November 2014
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turbonutter said:
There are pro's and cons with removing the turbo
To be fair...I can't think of any pro's to such an approach, other than having a handy adaptor should a turbo fail which would let you keep driving after fitting it.

From a mapping perspective, it makes little sense really.

turbonutter

Original Poster:

496 posts

207 months

Friday 14th November 2014
quotequote all
Might have to rethink the no turbo aproach then. I was thinking that It would be easier to set up the base map and all the functions like knock, without worrying about the turbo spooling up....

stevieturbo

17,229 posts

246 months

Friday 14th November 2014
quotequote all
turbonutter said:
Might have to rethink the no turbo aproach then. I was thinking that It would be easier to set up the base map and all the functions like knock, without worrying about the turbo spooling up....
The turbo is an integral part of your setup. Mapping without it fitted is just strange.

If you are concerned about boost or too much boost. Either dont put your foot down as far, or install the softest wastegate spring for now.

Either way it isnt a problem. It needs mapped with the turbo fitted one way or another. It's just wasting time and money paying someone to map a totally different configuration only to need it all done again.

anonymous-user

53 months

Friday 14th November 2014
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I've only ever run "without the turbo" for one reason, and that's for initial running in with a fresh engine, where i was worried about oil contamination. After an hrs running, i change oil and put the turbo on, initially just jam wastegate open if you are worried, but don't map anything like that, as the exhaust restriction and tuning will be completely wrong!

Liquid Knight

15,754 posts

182 months

Saturday 15th November 2014
quotequote all
What he said.

We used a base map from an N/A YB engine to start the rolling road process for a big turbo RS500 running a link ecu (remember those?). It tried to eat itself first run.

turbonutter

Original Poster:

496 posts

207 months

Thursday 27th November 2014
quotequote all
Engine fired up yesterday, would have been sooner, but had an issue with the trigger. AEM forget to mention that the cam & crank signal cant occur at the same time.... which of course is exactly where the did on my engine. Crank pickup moved and engine fired up smile

http://vid1086.photobucket.com/albums/j446/turbonu...

Couple of weeks & it will be off to the rolling road...

Liquid Knight

15,754 posts

182 months

Thursday 27th November 2014
quotequote all

stevieturbo

17,229 posts

246 months

Thursday 27th November 2014
quotequote all
turbonutter said:
Engine fired up yesterday, would have been sooner, but had an issue with the trigger. AEM forget to mention that the cam & crank signal cant occur at the same time.... which of course is exactly where the did on my engine. Crank pickup moved and engine fired up smile

http://vid1086.photobucket.com/albums/j446/turbonu...

Couple of weeks & it will be off to the rolling road...
Strange they dont allow it. A lot of ecu suppliers will say they dont like that to happen, but certainly would refuse engine operation because of it.

turbonutter

Original Poster:

496 posts

207 months

Thursday 27th November 2014
quotequote all
The haltech was opposite - it wouldn't run unless they did happen at the same time!

stevieturbo

17,229 posts

246 months

Thursday 27th November 2014
quotequote all
turbonutter said:
The haltech was opposite - it wouldn't run unless they did happen at the same time!
I think that would be more down to the people attempting to tune it...

I'm 99.99% sure that is not the case, and Haltech can have the phase/home trigger in a variety of locations.

turbonutter

Original Poster:

496 posts

207 months

Friday 28th November 2014
quotequote all
stevieturbo said:
I think that would be more down to the people attempting to tune it...

I'm 99.99% sure that is not the case, and Haltech can have the phase/home trigger in a variety of locations.
I had a big problem with my car not revving past 4000rpm at one point, the problem was eventually traced to the cam belt having jumped a tooth.
Looking at the scope trace, the crank signal was right on the edge of the cam signal & above 4000 rpm it just passed outside of the cam signal window & the engine cut. Moved the cam back 1 tooth & the crank signal was dead centre of the cam signal & no more problems.. Haltech confirmed to me that the signals have to happen at the same time.
So for the ECU I had they need to occur together.......

Evoluzione

10,345 posts

242 months

Thursday 11th December 2014
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Who are you going to get to map it this time?

turbonutter

Original Poster:

496 posts

207 months

Thursday 11th December 2014
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Evoluzione said:
Who are you going to get to map it this time?
Phill Lanes - GG Motorsport.

cirian75

4,245 posts

232 months

Monday 19th January 2015
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great thread, killed my morning boredom.

turbonutter

Original Poster:

496 posts

207 months

Tuesday 30th June 2015
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Well I guess after 6months its about time to update this thread!!

I did map the car without the turbo, and just an elbow installed in its place, that was back in december & it came out with 220BHP, which wasnt too bad considering it was a low compression engine and was sucking through the charge cooler...

A couple of weeks ago it was back on the rollers with the turbo fitted and the NA map hardly had to be touched, a couple of tweaks here and there, but in the main it was correct. The AEM ECU takes care of the extra fuel needed for the boost internally. Most of the session was spent fine tuning the boost control.

One thing that did show up on the logging is that the exhaust back pressure exceeds the boost pressure, once the boost is above 0.9bar, I wasnt looking for big numbers with this session, so we left the boost at 0.9bar, which is plenty for now. 475BHP and 400lbft. I dont have the graph to post, as I only have a paper copy and that is in the car, while i am back at sea...

Of course just before I left the Clutch went, so as usual I will have to fix the car when I get home, before I can drive it.
Not sure what happened with teh clutch, as its an engine out job to check & I didnt have time, but an initial look, found that the driven plate closest to the engine isnt connected to the gearbox input shaft anymore. So either the plate or spline has failed.........

Liquid Knight

15,754 posts

182 months

Tuesday 30th June 2015
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Welcome back. wavey

How was your holiday?

Just in case you get bored of the Busso the new Giulia has the 6C/Ferrari 2.9 V6 and has 503bhp to begin with. wink

turbonutter

Original Poster:

496 posts

207 months

Thursday 2nd July 2015
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Thats a nice engine, but its longitudinal, so getting it in the back of a stratos would be a problem smile

Think i'll stick with the Busso for now and I think the next step (after fixing the clutch) will be to investigate a different turbo....

Liquid Knight

15,754 posts

182 months

Thursday 2nd July 2015
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While the 6C is shelved rumor is someone at Alfa has dropped one transverse into a 4C platform. woohoo

What are you running now? The Ultima Alfa V6 turbo I played with had a Precision 64/70mm if I recall correctly.

turbonutter

Original Poster:

496 posts

207 months

Thursday 2nd July 2015
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The Current turbo is a Garret GT3582R with a 0.82 ar turbine housing.....

stevieturbo

17,229 posts

246 months

Thursday 2nd July 2015
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turbonutter said:
The Current turbo is a Garret GT3582R with a 0.82 ar turbine housing.....
What size is the engine ? And presumably that's a T3 turbine housing ?