Got my FD dynod

Started by strange_days_uk, December 14, 2007, 09:51:25 PM

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strange_days_uk

So went to Abbey motorsport to run on their hub dyno.  This is my Knightsports block with T70 lump.  Max boost I ran was just shy of 1.1 bar.

The peak power at the hubs was 400 bhp bang on.  The operator produced this flywheel chart with a flywheel loss factor of 10%.  I questioned this, but that is what he said.  I have read anything up to 18 %, so the flywheel figure could be greater than what you see on the graph.  I am very happy with 400 rwhp.  I have all the raw data he emailed me.  I have 0.8 bar boost at 4150 rpm.  Half a bar by 3702, spooling 0.3 bar by 3100 revs..



All in all, pretty happy... :Thumbsup!

Laeeq

well done fella..its very rewarding in the end...:3gears-rh
Laeeq

antnicuk

good result.    10% is accurate for fly to hub,  18% is about norm for fly to wheels
400 BHP - 650 KG\'s = 616 BHP Per Ton of Rotary Power

That\'s the way to do it! :Thumbsup!


BlitzBoy

nice figures there, she must feel pretty quick now
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old spec HB T51 470 @ wheels @ 1.2 BAR, 555 @ fly 10.46 @ 130 @ 1.25 Bar
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strange_days_uk

Yeah is great fun, it really puts a smile on your face..

iaint

Quote from: strange_days_ukYeah is great fun, it really puts a smile on your face..

I should see about getting my T70\'d lump on the dyno to see what it\'s making.  Usually puts a grimace of fear on my face this time of year rather than a smile though!!!

What sized hot-side are you running?

"The way to do is to be." - Lao Tzu

strange_days_uk

Hotside is 1.0 Iain

My boost controller was struggling on the day as 1 of the pipes split because of the heat from the turbo.  Luckily it wasn\'t one that would have caused a massive overboost.  So, in actual fact I didn\'t run above 0.9 bar on that run, below is the chart of boost.



At 1.1 bar the thing really shifts...

gsb876

Good figures there :Laugh

Just be careful this time of year, went to get some fuel last night and car was wheel spinning all over the place and was not even giving it much, did a nice drift around the Sainsbury\'s roundabout though with peeps watching :Laugh  easier when its icy :rolleyes:
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Ed_RX7

Quote from: strange_days_ukHotside is 1.0 Iain
 
My boost controller was struggling on the day as 1 of the pipes split because of the heat from the turbo. Luckily it wasn\'t one that would have caused a massive overboost. So, in actual fact I didn\'t run above 0.9 bar on that run, below is the chart of boost.
 

 
At 1.1 bar the thing really shifts...

 
Tujrn it up to 1.3.......then you\'ll really be impressed!!!!!!....trust me:Giggle :Giggle :Giggle
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rx7veilside

thats a good reading at about 5200rpm with 350hp/350ft pounds torque

iaint

Quote from: strange_days_ukHotside is 1.0 Iain

My boost controller was struggling on the day as 1 of the pipes split because of the heat from the turbo.  Luckily it wasn\'t one that would have caused a massive overboost.  So, in actual fact I didn\'t run above 0.9 bar on that run, below is the chart of boost.



At 1.1 bar the thing really shifts...


Interesting - which boost controller are you using?  Might have the gain turned up too much as it looks a bit wobbly!  (or is that the split pipe?)

I\'m getting 1.1. bar by 3800 with a 1.15 hot-sdie.  Very keen to find out what it\'s pushing out but it\'s scary-fast :)

"The way to do is to be." - Lao Tzu

strange_days_uk

Was down to the split pipe.

It held very well before the pipe went.

ordered some of this stuff, which should help

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=150194826842&ssPageName=STRK:MEWN:IT&ih=005