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Search: Posts Made By: scarab racing
Forum: Technical Q&A 05-04-2009, 11:15 PM
Replies: 12
Views: 1,514
Posted By scarab racing
I only changed down a couple of gears as it was a...

I only changed down a couple of gears as it was a big hill !!!! but did get some good air of the top of it.
Dont no the exact age of the engine but do know that it showed about 200+ on the hour...
Forum: Technical Q&A 05-04-2009, 07:49 PM
Replies: 12
Views: 1,514
Posted By scarab racing
Hi Reason for rebuild was it valve bounced and...

Hi
Reason for rebuild was it valve bounced and bent an inlet valve and snaped a rocker so whilst engine was out the boat it seemed sensible to strip down and check every thing.
Forum: Technical Q&A 02-04-2009, 09:37 PM
Replies: 12
Views: 1,514
Posted By scarab racing
Hi I've had the yanmar for a few years, I...

Hi
I've had the yanmar for a few years, I agree with it being dead until the turbo kicks in but it pulls well at bottem end then goes dead until all hell breaks out when the turbo spins up. ...
Forum: Technical Q&A 02-04-2009, 08:36 AM
Replies: 12
Views: 1,514
Posted By scarab racing
Hi Teckno 40 Sorry about name spelling in last...

Hi Teckno 40
Sorry about name spelling in last post
Forum: Technical Q&A 02-04-2009, 08:35 AM
Replies: 12
Views: 1,514
Posted By scarab racing
Hi Tenko Thank you for that will check and get...

Hi Tenko
Thank you for that will check and get back to you.
Have you tryed any tunning on these engines ie even higher pump preasure or turbo adjustments, uping the rev limiter?.
I want to get it...
Forum: Technical Q&A 01-04-2009, 08:17 AM
Replies: 12
Views: 1,514
Posted By scarab racing
Hi Tenko About 250 hours total, 25 hours since...

Hi Tenko
About 250 hours total, 25 hours since rebuild i.e head off,valves ground and reseated, new crankshaft. Initial puff of grey smoke on start (from cold) and very small puff of black when...
Forum: Technical Q&A 31-03-2009, 10:40 AM
Replies: 12
Views: 1,514
Posted By scarab racing
yanmar 315 lack of mid range power

From tickover to about 1900-2000rpm pick up is realy good then it just hovers until the rev's build realy slowly till the turbo kicks in, then acceleration and power is great its just the 1900 - 2200...
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