Barnesy Donating Members 210 Member For: 16y 1m 18d Gender: Male Location: Brisbane Posted 03/12/10 05:52 AM Author Share Posted 03/12/10 05:52 AM What did you end up doing, reco your engine or grab a second hand one.Cost is $3,500 changeover for xr engine. If I go down this path will probably sell the car afterwards. Fix the issue - new valves, machine head etc, upgrade springs + labour looking at $2-3,000+Spoke to Mick at Pit Lane earlier today, he said you can do all the work to fix it, but unless we find out what caused it it might happen again. Link to comment Share on other sites More sharing options...
IH8TOADS Silver Donating Members 3,618 Member For: 19y 8m 3d Gender: Male Location: OZ Posted 03/12/10 06:17 AM Share Posted 03/12/10 06:17 AM Its running above lambda 1.0 at > 10psi at lowish RPM....geebers! Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 9m 12d Gender: Male Location: @ my laptop Posted 03/12/10 06:23 AM Share Posted 03/12/10 06:23 AM we ran barnesy car up on our dyno as he felt it was overboosting at one stage but had appeared to have stopped, our first runs was a little cautious in case it was overboosting, but all seemed fine when tested and no audiable sign of knock was happening. The lean low rpm was pointed out to him but it had no detonation with that mixture so we have to assume the tuner had the timing set to suit the mixture.If the car had a previous overboosting issue some previous damage may have happened, but was not evident when tested. Link to comment Share on other sites More sharing options...
Barnesy Donating Members 210 Member For: 16y 1m 18d Gender: Male Location: Brisbane Posted 03/12/10 07:15 AM Author Share Posted 03/12/10 07:15 AM This is why I thought I had over boosting issues.Note the following from my tuner "Some of the dyno runs on the above sheet where only done for testing purposes only and not left in the car as final tune. It was more about checking the AFRs under high boost to make sure there was no lean conditions."Thanks Mick for your help, and laying all the cards on the table. Link to comment Share on other sites More sharing options...
spoolxr6 Member 312 Member For: 14y 3m 24d Posted 03/12/10 08:51 AM Share Posted 03/12/10 08:51 AM Pull the plugs out and crank the engine. Se if the pistons are moving. Then remove the rocker cover and see if the chain is in tack. You can measure the clearance between the top of the spark plug hole and the piston top when they are at top dead centre. If one is lower than others then you have a bent rod. But a bent rod would still give compression. At this stage it sounds it sounds like you have bent some valves. Your chain tensioner probably let go? Link to comment Share on other sites More sharing options...
Barnesy Donating Members 210 Member For: 16y 1m 18d Gender: Male Location: Brisbane Posted 03/12/10 09:23 AM Author Share Posted 03/12/10 09:23 AM Already pulled the rocker cover off.Turned the car over so cam lobe was downwards and there was a 5mm gap between the rocker arm and the cam, only seems to be the intake side.Definitely bent valves. Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 9m 12d Gender: Male Location: @ my laptop Posted 03/12/10 10:29 AM Share Posted 03/12/10 10:29 AM before pulling it down to far, check the cam timing is correct and then check cam lobe position looks correct regardless of cam phaser positioning, basically to see if the timing chain has jump teeth and then to see if the cams have turned compared to the phasers Link to comment Share on other sites More sharing options...
clark522 Donating Members 128 Member For: 15y 9d Gender: Male Location: Melbourne Posted 03/12/10 02:15 PM Share Posted 03/12/10 02:15 PM yeh ended up getting a changeover, cost me 3.5k installed 76000k on clock, with a second hand clutch as mine was rooted. Link to comment Share on other sites More sharing options...
Anchor Member 270 Member For: 15y 1d Gender: Male Location: Rockhampton Posted 05/12/10 11:38 AM Share Posted 05/12/10 11:38 AM Damn some people are unlucky! Link to comment Share on other sites More sharing options...
Barnesy Donating Members 210 Member For: 16y 1m 18d Gender: Male Location: Brisbane Posted 07/12/10 11:26 PM Author Share Posted 07/12/10 11:26 PM I have been looking at the Atomic HeadsCylinder Heads - Exchange#306190-RB Stage 3 head suit Ford DOHC 6 cyl BA SeriesStage 3 Porting, fully serviced, multi angle valve job, fitted with Atomic #306800 springs and new seals. Customers own head. $1,694.00Seems like a good dealIs it worth while? Link to comment Share on other sites More sharing options...
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