Re: sprint eng rebuild
Posted: Tue Jan 13, 2009 12:20 pm
when I degree'd my cam in I also noted that the crank pointer on front cover was 2 degrees out, I slotted the holes to adjust it.
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sprint eng rebuild
Page 8 of 11
Re: sprint eng rebuild
Posted: Sun Jan 25, 2009 6:08 pm
Finally about to start timing it all in as rebuilding the head has been more time consuming than I thought plus I have been doing one or two bits to raise a little cash to fund it.
Re: sprint eng rebuild
Posted: Sat Jan 31, 2009 6:07 pm
There is an error here can any one spot it?, it showed me that you are never too old to learn.
Re: sprint eng rebuild
Posted: Sat Jan 31, 2009 6:15 pm
Nope! been staring at the photo for 10 mins. & I can't see the error.
Re: sprint eng rebuild
Posted: Sat Jan 31, 2009 6:50 pm
End cap missing from the rocker shaft ?
Re: sprint eng rebuild
Posted: Sat Jan 31, 2009 8:02 pm
Turbo manifold not bolted on yet?
Re: sprint eng rebuild
Posted: Sat Jan 31, 2009 8:45 pm
3rd valve spring along upside down
Re: sprint eng rebuild
Posted: Sat Jan 31, 2009 8:54 pm
split pin for the end cap?
Re: sprint eng rebuild
Posted: Sat Jan 31, 2009 10:38 pm
I think Adam's on the money!
Re: sprint eng rebuild
Posted: Sat Jan 31, 2009 11:24 pm
.
Re: sprint eng rebuild
Posted: Sun Feb 01, 2009 10:22 am
congratulations Adam you are the winner 
I never even knew there was a right and wrong way round until I spotted it in the Haynes while skimming
so off came the head and check the inlets too, only to find errors there 
if only I had not fitted new springs they would have been correct.
Now I have an important question cos my brain is not working well today.
What position in degrees relative to TDC should full lift occur on no 1 inlet?
The cam timing is given as 32/68 68/32.
At the moment the setting is full lift at 115deg ATDC and using a feeler the duration is 270deg.
My brain hurts
I never even knew there was a right and wrong way round until I spotted it in the Haynes while skimming
so off came the head and check the inlets too, only to find errors there if only I had not fitted new springs they would have been correct.Now I have an important question cos my brain is not working well today.
What position in degrees relative to TDC should full lift occur on no 1 inlet?
The cam timing is given as 32/68 68/32.
At the moment the setting is full lift at 115deg ATDC and using a feeler the duration is 270deg.
My brain hurts
Re: sprint eng rebuild
Posted: Fri Feb 06, 2009 11:10 am
Jon, the duration is 280deg and full lift is at 108deg ATDC on the inlets based on 32/68 68/32
hope that helps
hope that helps
Re: sprint eng rebuild
Posted: Fri Feb 06, 2009 2:52 pm
it makes me wonder how many other people have done that, & whether its really a problem?2F45T4U wrote:3rd valve spring along upside down
Re: sprint eng rebuild
Posted: Fri Feb 06, 2009 3:04 pm
I would think many people have done that. I do not suppose in the short term it would cause a problem but in the long term the spring would probably fail prematurely. However as most people on here are rebuilding there engines to get the maximum performance from it, you will lose power because the springs are the wrong way up. It will take more pressure to open the valve with the spring installed upside down thus robbing you of a little power.
If it did not matter there would not be a top & bottom.
If it did not matter there would not be a top & bottom.
Re: sprint eng rebuild
Posted: Fri Feb 06, 2009 3:15 pm
the new set I bought from Rimmers are the same both ends