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Re: Building a monster (cheap) type IV engine
Posted: Mon Dec 02, 2013 10:02 pm
by Wentzel
What are the differences between 1800 and 2000 heads? Valves only or is there more 'meat' on the 1800's? The engine I'm buying is a 2000 so maybe I can use 1800 heads or do the 2000 heads and install larger valves? The 66 crank is probably stronger too but that will be the trade off more cc's or stronger crank. As far as I could find the heads are interchangable so it should be easy to swop them.
Re: Building a monster (cheap) type IV engine
Posted: Tue Dec 03, 2013 3:44 am
by Tony Z
Re: Building a monster (cheap) type IV engine
Posted: Tue Dec 03, 2013 3:58 am
by Tony Z
Some pics that I have saved over time - I think Eben posted them here originally
OK, its not an 1800 head, but a comparison between at 1700 and 2000 head
I am sure other head designs were used
Intakes
1700
1700-intake.jpg
2000
2000-intake.jpg
1700-2000
1700-2000-T4-intakes.jpg
Exhausts
1700
1700-exhaust.jpg
2000
2000-T4-exhaust.jpg
1700-2000
2000-1700-exhausts.jpg
Re: Building a monster (cheap) type IV engine
Posted: Tue Dec 03, 2013 7:09 am
by Wentzel
The valve sizes I found and will be changing anyways. The head material was a concern but from the pictures it seems that the 1700 heads have a little more above the combustion chamber. They will be a little smaller but can be opened up for the bigger cylinders.
Thanks Tony
Now I'm still trying to decide which route to go.
Edit: I think I have it the wrong way around the 2000 have more meterial?
Re: Building a monster (cheap) type IV engine
Posted: Wed Dec 04, 2013 10:29 am
by Dawie
Main bearing availability for type 4... What is the latest update?
Impi, what is your experience. Type 4 main bearings are available again overseas, (after some shortages), but locally...
Masterparts in Kenilworth Cape still had some in last oversize/undersize a few months ago. Now they have'nt got, and can't get any more in any size. Then there is talk overseas of poor quality bearings around lately...
Re: Building a monster (cheap) type IV engine
Posted: Wed Dec 04, 2013 11:02 am
by calooker
Dawie wrote:Main bearing availability for type 4... What is the latest update?
Impi, what is your experience. Type 4 main bearings are available again overseas, (after some shortages), but locally...
Masterparts in Kenilworth Cape still had some in last oversize/undersize a few months ago. Now they have'nt got, and can't get any more in any size. Then there is talk overseas of poor quality bearings around lately...
Stay away from the latest T4 mains & big ends made by Silverline, they are way out of spec.
Re: Building a monster (cheap) type IV engine
Posted: Wed Dec 04, 2013 12:03 pm
by IMPI
I agree on the silverlines they are crap to put it mildly but Mahle/Metaleve has produced again and with callooker's help I import those. Here and there thera are a few sets lying around but R1000 seems to be the going rate for a decent set of KS Bearings.
if one looks at new production KS the quality has definitely slipped somewhat so it pays to do trail assemblies and measurements.
Armand