spent the weekend modifying a std carb head(cross pattern on hexaust side)to fit efi manifold from xr3i
browsed one of the restoration/rebuild pages of an adaptor plate which is used to fit the efi manifold to the standard mfi/carb head

on my previous motor , i match ported the inlet manifold for my dellorto dhla(f)40's and was only left with 2mm around the port on the head.i was woried that it would blow but i used some good quality thick gasket material with some high temp silicone and experienced no problems , even at 1.5 bar plus

after seeing this plate , i am now worried that i have not got enough meat left on the head for a decent seal. after grinding away material to fit the injectors , i only have on some places 2.5mm left at the top.
will i have problems here?

 

i reckon its a case of trying it, ive seen ppl drill out snapped manifold studs to fix a heli coil in instead of the stud and the holes were practicly on the line of the head

 

keep you all posted

has anyone been to the gotech site - check it out

 

So, are you saying you've modified the inlet ports to accept injectors, yet you are you using a conversion plate?

 

no plate mate , cut outs cut into the top of the ports

 

Should be ok i saw a similar thing done before.

 

wot about crank sensor?

 

Indeed what about crank sensors?

this thread is about the head

 

ill be using gotech - no crank angle sensor required!

 

Great so u have no sequential injection. Very crude.

 

no mate - crude is blowing 2 bar through 40mm dellortos with 2mm main jets and getting 3 - 4 km / liter!