Page:
Home > Help Needed / General Tech Chat > ERA Mini Turbo - power spike

robert

User Avatar

6753 Posts
Member #: 828
Post Whore

uranus

24th Mar, 2011 at 07:57:17am




On 22nd Mar, 2011 ricsdad said:
Engine power (corrected) was 92.7hp 4800rpm and Torque (corrected) was 102lbs/ft 4742
(power about right, torque higher than stated by Rover)

What is worrying is the way in which the power was delivered - nice rising line from 2000 rpm to 3000 rpm where 65 hp is reached. 62 - 65 hp is maintained 3000 rpm to 4200 when a sharp spike occurs to 4800rpm when the maximum power 0f 92.7 is reached. at 5000 rpm power falls back down to 65 then after 5500 drops dramatically.

The torque graph rises in a straighter line and peaks at the same rpm but does not drop away and remain in the 98 - 102 lbs/ft zone.

.



looking at the graph ,are you confusing the two curves ? the sloping one is the bhp and is scaled on the left ,so it drops to 85 odd then up again .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Paul S

User Avatar

8604 Posts
Member #: 573
Formerly Axel

Podland

24th Mar, 2011 at 09:12:44am

Robert is correct. The power is holding up , but the torque is dropping away.

The spiky nature of the torque curve could be down to the dyno.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

ricsdad

45 Posts
Member #: 9406
Member

Tadley, Hampshire.

24th Mar, 2011 at 11:55:14am

Thank you everyone for your advice and comments, I am a bit embarassed to say that I have not been reading the rolling road traces correctly! Confusing the HP trace with the torque one!

Therefore it is the torque line that spikes dramatically to 104 lbs/ft before settling at 90 ish lbs/ft Rover claimed when the car was launched 87lbs/ft at 3600 rpm and that is what mine is doing! EXCEPT FOR THE SPIKE!! So I reckon your combined advice about the actuator being slow to react or sticking is probably the cause!

Once again thank you to everyone who has commented - look forward to meeting you all in the future
Home > Help Needed / General Tech Chat > ERA Mini Turbo - power spike
Users viewing this thread: none. (+ 1 Guests) <- Prev  
To post messages you must be logged in!
Username: Password:
Page: