<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">Simple answer:</div><div dir="ltr">Difference is price, weight, strength and friction. </div><div dir="ltr">3 rings & forged are heaps lighter, stronger, and have less friction. But cost more. </div><div dir="ltr">If you never over 5,000 rpm, buy the cheapest. Cast, 5 rings. </div><div dir="ltr">Buy what is appropriate for your car, and it’s useage. </div><div dir="ltr">Chris</div><div dir="ltr">www.myaustinhealey.com</div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr"><br><blockquote type="cite">On 21 Mar 2025, at 1:47 pm, Alan Seigrist via Healeys <healeys@autox.team.net> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr">I put five ring pistons on my BJ8 20 years ago and despite common misconceptions about too many rings, for my regular use BJ8 I have not seen any erosion in oil use or compression after over 80k miles. </div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, Mar 21, 2025 at 8:11 AM Roger Grace <<a href="mailto:roggrace@telus.net">roggrace@telus.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>I have to replace the pistons on my BJ8 that is being rebuilt.</div><div>Wondering if others have any suggestions about the merits of forged pistons vs regular cast ones.</div><div> <br></div><div>Wossner from AH spares</div><div>or</div><div>Omega from Denis Welch.</div><div><br></div><div>Both are 3 ring vs 5 ring for the cast ones, and more that 2x price of regular cast ones.</div><div>So my question is are they worth the significant extra $. Apart from increased strength what are the benefits ? Less friction and less heat ?</div><div>Anyone with experience using them. Maybe better to spend on other upgrades.</div><div>Comments appreciated.</div><div>Tkx</div><div>rg</div><div><br></div><div><br></div></div>
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