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IvorMog #784183 21/08/23 05:13 PM
Joined: Jun 2022
Posts: 1,042
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M
Has a lot to Say!
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M
Joined: Jun 2022
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Likes: 148
Originally Posted by IvorMog
Is the standard engine safe to 8000 rpm?

No!

Originally Posted by IvorMog
What have you done to the bottom end to support the extra power and revs you are getting now?

Nothing! However, I've implemented a rev limiter in the EMU Black software thumbs

Originally Posted by IvorMog
Sorry if I missed this in your earlier posts.

You've missed noting IvorMog, but just because I've proved the engine can go to 8,000 rpm and will keep producing power all the way until it gets there, doesnt mean its sensible to alow it to do so wink

I'm pulling out at 7,500 chaps, well, actually I start pulling timing from 7,300 on before the hard fuel cut chimes it at 7,500 rpm redcard

The point is the data proves what an amazing engine the Duratec truly is and how well the FF inlet and exhaust are supporting it so it can deliver its full potential, no wonder Caterham have been using it for years... and still continue to do so!

m748 #784184 21/08/23 05:17 PM
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Originally Posted by m748
Thanks for all this Montegue and the myriad of data supporting your improvements. Great progress and how good is this to help realise potential of a solid block?

Thanks too for the contacts - I'll be in touch with them. Have a mate who lives in Oxfordshire - I'm sure he'd look after the car for a bit! Not managed to get through to the ECU guys yet, but I guess they are pretty busy.

The data readouts are amazing to read, and I'm having to 'upskill' in how to interpret them. Helped me clear my thinking on the need for a quicker programmable ECU. The current 'brain' is doing what it can with 1998 computer power. A new brain can read an react so much faster to sensor inputs and make a few more interpretations; giving more flexibility. I found this Movie on Youtube quite instructional - '90s technician guide for the modern 'EMU"! The link starts at the early EMU then goes through to our era at about 40mins. Shows what the EMU reads, and how it has evolved.



Fascinating that the 'mechanical' computer of the new cams makes such a difference. The ratios machined in steel to open and close valves - I'm sure the engine wouldn't be able to make the most of them without the free breathing inlet and exhaust side or an ECU that can judge and fuel accordingly. Having had an injected motorcycle from the 90's and now one from the 21st century the difference huge - even with similar underlying mechanics. Can see how any base engine would benefit from more brain power.

Looking forward to a Youtube update from you soon. Drive Monty safe in the meantime!


Thanks m748, some really good points made there.

Especially the staying safe part thumbs

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