Lotus Elan

New SAS cylinder head

PostPost by: batfish » Sun Nov 24, 2019 1:05 pm

Had lots of trouble last year with the engine losing water during races, eventually decided the only way forward was a new cylinder head casting . LH Owen at Telford rebuilt the engine with new SAS head. 1st time I have used him and well pleased with the result.

Regards
Andy
Attachments
img-20190920-wa0004.jpg and
img-20190920-wa0005.jpg and
img-20190920-wa0000.jpg and
batfish
Third Gear
Third Gear
 
Posts: 269
Joined: 09 Oct 2003
Location: Staffordshire

PostPost by: nmauduit » Sun Nov 24, 2019 2:11 pm

nice ! Please follow up with the outcome after a couple races...

I'm pretty sold to the same route, esp. considering my old beat up head (...) - though still at the budgeting phase.

If I may, what size porting and valves did you opt for ?
S4SE 36/8198
User avatar
nmauduit
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1282
Joined: 02 Sep 2013
Location: France

PostPost by: batfish » Sun Nov 24, 2019 3:33 pm

Hi
The engine is as per fia appendix I regs so the valves are as the homologation amendment with inlet at 1.562inch. I assume the outlet is standard as it's not amended in the papers. Could not tell you about the porting other than the engine builder told me he does tweak the SAS head porting
Andy
batfish
Third Gear
Third Gear
 
Posts: 269
Joined: 09 Oct 2003
Location: Staffordshire

PostPost by: Frogelan » Sun Nov 24, 2019 6:21 pm

Hi Andy

The SAS heads have a good reputation.

I would be curious to know the size of the exhaust port size.

FIA papers suggest that this is (homologated at) 34mm. I think standard is closer to 31 mm (?) and TTR have 36mm manifold / headers...

Good luck with the rebuild.

Andrew
1965 Lotus Elan S2 26/4022 (originally Dutchess Lotus East, PA and NJ Area, USA)
Frogelan
Third Gear
Third Gear
 
Posts: 356
Joined: 03 Jul 2017
Location: Paris, France

PostPost by: Panda » Wed Dec 04, 2019 4:28 am

Hi Andrew,
My SAS head which was supplied and modified by Tony Ingram has exhaust ports of 33 mm at the gasket face and 31mm approximately 15mm from the flange face into the port.
I'm very happy with it and have just given it a refresh for next years race series.

Alan P
Panda
Second Gear
Second Gear
 
Posts: 145
Joined: 05 Mar 2011
Location: Sydney, Australia

PostPost by: Frogelan » Wed Dec 04, 2019 4:32 am

Thank you Alan !
1965 Lotus Elan S2 26/4022 (originally Dutchess Lotus East, PA and NJ Area, USA)
Frogelan
Third Gear
Third Gear
 
Posts: 356
Joined: 03 Jul 2017
Location: Paris, France

Total Online:

Users browsing this forum: No registered users and 1 guest