Ian Mackay

Active Member

• Mar 18, 2018

• #1

Rebuilt the landy, was looking to get the head skimmed, anyway as mentioned the head had internal cracks so I put on an other head, slight problem, ordered a 3 hole gasket, thicker, think its not as responsive, candidate for a remap I think

 

Bantam1

Well-Known Member

• Mar 18, 2018

• #2

Doubt its down to gasket thickness, I only put 3 hole gaskets on anyway.

 

Ian Mackay

Active Member

• Mar 18, 2018

• #3

Bantam1 said:

Doubt its down to gasket thickness, I only put 3 hole gaskets on anyway.

Click to expand...

Decreased compression, decreased performance !

 

Bantam1

Well-Known Member

• Mar 18, 2018

• #4

Ian Mackay said:

Decreased compression, decreased performance !

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True but calculate the compression change; its not going to make a noticeable difference at all, unless of course you are looking for dyno performance increments on a blue printed motor.

 

Ian Mackay

Active Member

• Mar 18, 2018

• #5

I hear you Bantam, just don't feel as sharp acceleration, ??

 

dieseldog69

Well-Known Member

LZIR Despatch Agent

• Mar 18, 2018

• #6

Ian Mackay said:

I hear you Bantam, just don't feel as sharp acceleration, ??

Click to expand...

Maybe the head castings were slightly different? It's amazing how a few hours with a rotary burr to smooth out casting imperfections and opening up the ports to match the gaskets can really help air flowing through the engine.

 

Ian Mackay

Active Member

• Mar 18, 2018

• #7

Aye well it's on now, not going near it again, saying that struggled to start this morning, felt like a choked fuel filter ??

 

Ian Mackay

Active Member

• Mar 18, 2018

• #8

Ian Mackay said:

Aye well it's on now, not going near it again, saying that struggled to start this morning, felt like a choked fuel filter ??

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Talked to my mate he reminded me that a few of the glow plug caps were brittle and broke when we removed the head, it was -3° they might need taped on I'll check it tomorrow.

 

Ian Mackay

Active Member

• Mar 18, 2018

• #9

And he said fuel filter also

 

dieseldog69

Well-Known Member

LZIR Despatch Agent

• Mar 18, 2018

• #10

Ian Mackay said:

And he said fuel filter also

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Seems a bit sudden for fuel filter, usually it is a bit gradual not exactly good today and no power tomorrow straight after changing the head.

I'd say you'll be doing it again soon enough.

 

Discodevon

Well-Known Member

• Mar 19, 2018

• #11

If it struggled to start it may be pointing towards compression

 

Ian Mackay

Active Member

• Mar 19, 2018

• #12

Fuel filter changed today, sorted, .new beast, pulling strong, obviously filter was choked another part of the problem appeared to be an over tightening of the drain cap which spread the o ring and was allowing air into system, fuel filter has been on a while, all other filters and oil changed at head swap.