Pistons for a 7HP
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AlanBartlett
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1935 Weasel Sports Tourer
1936 Jowett Lorry (A basket case)
1953 Jowett Bradford Lorry - Given Name: Alan
- Location: Somerset
Pistons for a 7HP
I'm looking for a set of pistons for a 7hp, I was speaking to Geoff wills yesterday and he thinks that they might be able to get or make some over in Australia or New Zealand, As I think Tony G, had some made, does anyone from over there know of the place or a website contact?
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Chris Spencer
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Re: Pistons for a 7HP
Alan - I may have a spare set of new 8 hp pistons that came with the spares when I bought my car - but I do not know of what difference there is between the 7 and 8 hp pistons ??? Anyone out there know ??
37 Jowett 8 HP - In many parts
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Keith Andrews
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Re: Pistons for a 7HP
There is a email link on the NZ jowett web site to our spare parts guys
www.jowettnz.net
www.jowettnz.net
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kemp1942
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Re: Pistons for a 7HP
Chris/Alan - I have 8hp std pistons in my '35 'spare' engine - the bores have been taken out to just over +060". I have the exact size somewhere - will look for it and post it later this week. No other 'differences'.
It was 3.024 but this should be re-checked
It was 3.024 but this should be re-checked
Last edited by kemp1942 on Thu Sep 16, 2010 11:11 pm, edited 1 time in total.
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Tony Fearn
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Re: Pistons for a 7HP
Alan et al.
I seem to remember that Roy Braddock told me that 60 thou oversize 7hp pistons could be used in standard 8hp bores. Perhaps George can vouch for this.
Alan. Why are you still having problems? IP says you've contacted him several times so you should be sorted by now.
Tony.
I seem to remember that Roy Braddock told me that 60 thou oversize 7hp pistons could be used in standard 8hp bores. Perhaps George can vouch for this.
Alan. Why are you still having problems? IP says you've contacted him several times so you should be sorted by now.
Tony.
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AlanBartlett
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1953 Jowett Bradford Lorry - Given Name: Alan
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Re: Pistons for a 7HP
Is there anything stopping me putting my 8hp std pistons in my 7hp pot? The size of piston which came out that pot are fractionally smaller than the 8hp std pistons, don't have figures on me. Have emailed George Garside and will put his replys up here for reference later on...
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kemp1942
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Re: Pistons for a 7HP
Hi Alan.
The first Jowett activity of the year for me ! Have just been measuring Arabella for wiring lengths for the Flashing Indicators I have fitted.
I have 8hp std pistons in my 'spare' 7hp engine. Bores were taken out to, I believe from memory, 3.032" (by IP's 'boring' man).
Std 7HP are 2.9695". Std 8hp are 3.032". 3.032" is 2.9695 +063" so you need your 7hp pots taken out to +063". Worn +060"'s are probably at that anyway !
I do not recall Ian saying any other mod had to be done to the 8hp pistons but this should be double checked as obviously should the above measurements
Ian
The first Jowett activity of the year for me ! Have just been measuring Arabella for wiring lengths for the Flashing Indicators I have fitted.
I have 8hp std pistons in my 'spare' 7hp engine. Bores were taken out to, I believe from memory, 3.032" (by IP's 'boring' man).
Std 7HP are 2.9695". Std 8hp are 3.032". 3.032" is 2.9695 +063" so you need your 7hp pots taken out to +063". Worn +060"'s are probably at that anyway !
I do not recall Ian saying any other mod had to be done to the 8hp pistons but this should be double checked as obviously should the above measurements
Ian
A Bulldog is for life