Puffwagon Puff Gold Donating Members 15,929 Member For: 9y 10m 2d Gender: Male Location: South Australia Posted 18/02/19 01:16 PM Share Posted 18/02/19 01:16 PM 8 minutes ago, eff xr6t said: My stock 4l did 7200+ for years on 25lb That wasn't a barra though was it? That's not something a stock barra can do. Link to comment Share on other sites More sharing options...
eff xr6t Member 569 Member For: 11y 2m 1d Posted 18/02/19 01:19 PM Share Posted 18/02/19 01:19 PM Still has the same bore and stroke as a Barra not a lot changed on them. If anything the early motor had a worse rod to stroke ratio because of 4mm shorter rods. Plenty of speedway guys been turning a 250 to 7500 for years aswell the same stroke. It might be more then what’s recommended safe but lot of motors out there doing it Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,929 Member For: 9y 10m 2d Gender: Male Location: South Australia Posted 18/02/19 01:29 PM Share Posted 18/02/19 01:29 PM Yeah I guess the trade off is lifespan. That's always the downside to revving any motor past it's safe limits. Link to comment Share on other sites More sharing options...
S.M.K New Member 4 Member For: 7y 11d Posted 24/07/20 09:48 AM Share Posted 24/07/20 09:48 AM What happened to this build? I remember reading it last year getting excited 😕😕 Link to comment Share on other sites More sharing options...
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