Subject: Re: [Healeys] BJ8 Pistons

From: Chris Dimmock via Healeys <[email-masked]>
Date: Fri, 21 Mar 2025 17:22:01 +1100

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div dir=3D"ltr"></div><div dir=3D"ltr">Sim=
ple answer:</div><div dir=3D"ltr">Difference is price, weight, strength and f=
riction.&nbsp;</div><div dir=3D"ltr">3 rings &amp; forged are heaps lighter,=
 stronger, and have less friction. But cost more.&nbsp;</div><div dir=3D"ltr=
">If you never over 5,000 rpm, buy the cheapest. Cast, 5 rings.&nbsp;</div><=
div dir=3D"ltr">Buy what is appropriate for your car, and it=E2=80=99s useag=
e.&nbsp;</div><div dir=3D"ltr">Chris</div><div dir=3D"ltr">www.myaustinheale=
y.com</div><div dir=3D"ltr"><br></div><div dir=3D"ltr"><br></div><div dir=3D=
"ltr"><br></div><div dir=3D"ltr"><br><blockquote type=3D"cite">On 21 Mar 202=
5, at 1:47=E2=80=AFpm, Alan Seigrist via Healeys &lt;[email-masked]&=
gt; wrote:<br><br></blockquote></div><blockquote type=3D"cite"><div dir=3D"l=
tr">=EF=BB=BF<div dir=3D"ltr">I put five ring pistons on my BJ8 20 years ago=
 and despite common misconceptions about too many rings, for my regular&nbsp=
;use BJ8 I have not seen any erosion in oil use or compression after over 80=
k miles.&nbsp;&nbsp;</div><br><div class=3D"gmail_quote gmail_quote_containe=
r"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Mar 21, 2025 at 8:11=E2=80=AF=
AM Roger Grace &lt;<a href=3D"mailto:[email-masked]">[email-masked]<=
/a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0p=
x 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><di=
v dir=3D"ltr"><div>I have to replace the pistons on my BJ8 that is being reb=
uilt.</div><div>Wondering if others have any suggestions about the merits of=
 forged pistons vs regular cast ones.</div><div>&nbsp; <br></div><div>Wossne=
r from AH spares</div><div>or</div><div>Omega from Denis Welch.</div><div><b=
r></div><div>Both are 3 ring vs 5 ring for the cast ones, and more that 2x p=
rice of regular cast ones.</div><div>So my question is are they worth the si=
gnificant extra $. Apart from increased strength what are the benefits ? Les=
s friction and less heat ?</div><div>Anyone with experience using them. Mayb=
e better to spend on other upgrades.</div><div>Comments appreciated.</div><d=
iv>Tkx</div><div>rg</div><div><br></div><div><br></div></div>
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