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 3673 Posts Member #: 9300 Post Whore Quarry Bonk |
4th Jun, 2012 at 08:44:25pm
Helping a mate build his engine, and he's just joined although he's been reading for a while. Took some pictures on my phone and something just doesn't seem right....
On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!! 17.213 @ 71mph, 64bhp n/a (Old Engine) |
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 9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
4th Jun, 2012 at 08:50:11pm
Your looking at 0.010" to 0.012" anything more is not going to cut it. ..may be the wrong ring pack
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8 Posts Member #: 9983 Junior Member West Midlands |
4th Jun, 2012 at 08:54:04pm
The pistons are 71.12mm measured with several different micrometers and calipers. The gap between the piston and bore is 0.12mm without the rings. I don't think I have the correct set of piston rings. |
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3673 Posts Member #: 9300 Post Whore Quarry Bonk |
4th Jun, 2012 at 08:56:54pm
He bought the engine fresh in bits and the crank seems to have gone well, all +0.10 bearings and shims seem to be correct (haven't checked endfloat yet)
On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!! 17.213 @ 71mph, 64bhp n/a (Old Engine) |
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9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
4th Jun, 2012 at 08:59:23pm
What pistons are they
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3673 Posts Member #: 9300 Post Whore Quarry Bonk |
4th Jun, 2012 at 09:01:17pm
Not sure Steve, the engine was bought as a lot so not much is known about it. They're 3 ring pistons and don't really have any markings. Theres one under the crown but i've forgotten what it was since earlier. On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!! 17.213 @ 71mph, 64bhp n/a (Old Engine) |
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8 Posts Member #: 9983 Junior Member West Midlands |
4th Jun, 2012 at 09:09:56pm
H&G DTD731 is what is stamped under the crown. |
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9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
4th Jun, 2012 at 09:19:20pm
I would ditch those and get a set of omegas
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3673 Posts Member #: 9300 Post Whore Quarry Bonk |
4th Jun, 2012 at 09:22:12pm
It's only an N/A engine steve, nothing serious is being put through it. And he drives sensibly anyhow. If the day ever comes that it sees any boost pressure it'll be pulled apart for a piston change. On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!! 17.213 @ 71mph, 64bhp n/a (Old Engine) |
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
4th Jun, 2012 at 09:27:48pm
Where and how did you measure the pistons? What size is the bore? +40?
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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8 Posts Member #: 9983 Junior Member West Midlands |
4th Jun, 2012 at 09:37:35pm
I measured the pistons about 10mm from the bottom of the skirt using a micrometer. I don't know the size of the bore I will find this out tomorrow. |
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9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
4th Jun, 2012 at 10:07:38pm
The pistons are + 20s making It a 1293 cc
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 1755 Posts Member #: 8852 Post Whore leicestershire |
5th Jun, 2012 at 08:50:32am
Have u checkd the bore? No point in gettin new pistons if uve got a 22 thou bore 13.95 1/4 mile on a 2.95 fd. Carnt be that hard to beat! |
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