ENGINE OPTIONS

[dock]

GUYS
I am currently running a healthy standard single port 1600in a 70 low light which scoots along OK but I have decided I want a little more grunt. Can anyone offer advice/opinion on the best combination (for a reasonable budget) that will achieve reliability, cruise on about 65mph on the flat and not roll backwards going up a hill.

Is there stuff I can do to the SP 1600 that will achieve this even ?

Thanks Paul :?

 

[pete nice]

A pair of twin carbs & a nice free flow exhaust will help. If you fancy pulling the heads off, getting them gas flowed will help alot.

 

[Guest]

1776 maybe with twin webers?

what is your budget?

 

[Tintop]

Twin port heads, dual carbs, decent exhaust.

Maybe a set of 1641 barrels and pistons. (can buy a kit with new twin port heads).

 

[dock]

Thanks Guys - no budget considered as yet but it will be at the lower end

 

[Guest]

then i would change the heads for twin port heads, it will also mean changing the manifold which should be easy to find secondhand. it will give more power cheaply

 

[pete nice]

I drove a tuned 1776 that had single port heads on, they had been reworked. It was fitted in a split with reduction boxes, but a built gearbox. I couldn't believe how qick it was pulling away. I was stunned!

S/P can be made to work well if you use the right people. Twin port will rev higher & is the better design.

 

[Araon]

Keep your SP and flow match the heads with the manifolds will make a hell of a difference, this can be done fairly easily either by a local engineers or in the garden shed.

free flow exhaust and decent carb set up and sort out your ignition.

Nothing expensive but should put a bit of a smile on your face especially if you undertake the work yourself....

 

[Guest]

Keep your SP and flow match the heads with the manifolds will make a hell of a difference, this can be done fairly easily either by a local engineers or in the garden shed.

free flow exhaust and decent carb set up and sort out your ignition.

Nothing expensive but should put a bit of a smile on your face especially if you undertake the work yourself....

theres a good how to in volksworld about 2-3 months ago on how to flow the heads, looks very easy, and cheap to do.

 

[T2-Nate]

If you go for let's say - a 1776cc kit, do you have to machine the crankcase and use another crankshaft?

 

[kempy]

Keep your SP and flow match the heads with the manifolds will make a hell of a difference, this can be done fairly easily either by a local engineers or in the garden shed.

free flow exhaust and decent carb set up and sort out your ignition.

Nothing expensive but should put a bit of a smile on your face especially if you undertake the work yourself....

Araon,

Any chance you can mail me with more info in basic English.

Cheers

mike

 

[james_stan]

If you go for let's say - a 1776cc kit, do you have to machine the crankcase and use another crankshaft?

Crankcase - yes.

Standard crank should be OK provided you're not planning to rev the nuts off it. In these instances people use counter balanced cranks (££££'s)which are often coupled with a 'hot camshaft' from Engle or Scat to help rev higher.

However, if you're not careful you can end up spending thousands.

If I was in your shoes I would go for the carbs first then tinker with things like ratio-rockers and see if that makes a difference also.

Cheers

James