sprint eng rebuild

[triple tango]

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.

[trackerjack]

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.

[trackerjack]

There is an error here can any one spot it?, it showed me that you are never too old to learn.

[Mad Mart]

Nope! been staring at the photo for 10 mins. & I can't see the error.

[Carl]

End cap missing from the rocker shaft ?

[newguy]

Turbo manifold not bolted on yet?

[2F45T4U]

3rd valve spring along upside down

[rich]

split pin for the end cap?

[Mad Mart]

I think Adam's on the money!

[xvivalve]

.

[trackerjack]

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

[paulsprint]

Jon, the duration is 280deg and full lift is at 108deg ATDC on the inlets based on 32/68 68/32

hope that helps

[triple tango]

3rd valve spring along upside down

it makes me wonder how many other people have done that, & whether its really a problem?

[Dolly racer 33]

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.

[triple tango]

the new set I bought from Rimmers are the same both ends