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559 Posts Member #: 2775 Post Whore Aberdeen |
19th Oct, 2008 at 12:48:04pm
My engine has developed a strange knock that I cant quite pinpoint. Any suggestions? Under hard acceleration I get a quite heavy knock ( almost like a big end kind of rattle) It doesnt do it at very low rpm or when labouring only when it is really picking up and starting to work.Now for the strange bit. If I keep the foot planted after a bit it clears! My oil pressure is good, my plugs look good. I dont have any excesive breathing through my engine breathers, Have checked my rockers and shaft etc and all seems fine. Any suggestions as to what to investigate next?
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 3692 Posts Member #: 1833 Formally mini_majic Auckland, New Zealand |
19th Oct, 2008 at 12:51:35pm
anyway of measuring the a/f ratio's? |
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559 Posts Member #: 2775 Post Whore Aberdeen |
19th Oct, 2008 at 12:58:59pm
Yeah got an Aem guage. And the are bang on. The car was set up by my local RR guy in August and none of the Ratios have changed. |
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 1346 Posts Member #: 2340 Post Whore Dublin Ireland |
19th Oct, 2008 at 02:25:08pm
Sounds like deth get a boost guage on there and see what your geting when it nocks also what ignition are you runing On 17th Feb, 2009 Rob H said:
I find the easiest way is to super glue the bolt to the end of one of my fingers. ______________________________________________________ |
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 6753 Posts Member #: 828 Post Whore uranus |
19th Oct, 2008 at 02:32:02pm
back off the timing 5 degrees and try it again ? Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM |
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 12307 Posts Member #: 565 Carlos Fandango Burnham-on-Crouch, Essex |
19th Oct, 2008 at 02:52:30pm
^^^^^ i agree On 28th Aug, 2011 Kean said:
At the risk of being sigged... Joe, do you have a photo of your tool? http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1 https://joe1977.imgbb.com/ |
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 4360 Posts Member #: 1459 En-suite user Braintree, Essex |
19th Oct, 2008 at 04:43:49pm
Before doing the timing, try different petrol. On 19th Jan, 2010 wil_h said:
I would start the furthest place from the finish. On 24th Mar, 2012 apbellamy said:
I feel all special knowing that I've given your mum my wood. Been neglecting Turbo'd 'A' series.............. |
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559 Posts Member #: 2775 Post Whore Aberdeen |
19th Oct, 2008 at 07:35:27pm
I was just thinking petrol. As that appears to be the only thing I have changed recently! I had kind of ruled out detonation as the timing etc had been unchanged, and nothing appears worn. Would fuel really give me that big a change? I always thought it might change from nothing to light pinking I never thought it would go from nothing to knocking. What fuel does everyone use/ recommend? and what one are prone to going off |
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6753 Posts Member #: 828 Post Whore uranus |
19th Oct, 2008 at 09:09:39pm
v power by shell is good ,i had det on esso 97 at pod. Edited by robert on 19th Oct, 2008. Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM |
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
19th Oct, 2008 at 09:24:20pm
V Power Gauranteed 100 octane at the pump.
On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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559 Posts Member #: 2775 Post Whore Aberdeen |
19th Oct, 2008 at 10:24:50pm
How quick do some of these petrols go off? Or is that a bit of an old wives tale? My car is a bit of a trackday / weekend warrior so sometimes sits fora couple of weeks without turning a wheel. I am beggining to think thats whats happening here. I am itching to get it out of the garage and downt to my nearest shell to find out |
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4360 Posts Member #: 1459 En-suite user Braintree, Essex |
19th Oct, 2008 at 10:32:34pm
A few weeks is fine On 19th Jan, 2010 wil_h said:
I would start the furthest place from the finish. On 24th Mar, 2012 apbellamy said:
I feel all special knowing that I've given your mum my wood. Been neglecting Turbo'd 'A' series.............. |
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3692 Posts Member #: 1833 Formally mini_majic Auckland, New Zealand |
19th Oct, 2008 at 10:45:34pm
6 weeks is what i have been told! alot shorter than i thought!!!
Edited by James_H on 19th Oct, 2008. |
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4314 Posts Member #: 700 Formerly British Open Classic The West Country |
19th Oct, 2008 at 11:00:40pm
That could explain why the Open is a bit off, I can't remember the last time I filled it up, not sure if it was this year even. Isambard Kingdom Brunel said:
Nothing is impossible if you are an Engineer |
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