But plenty of room in the channels (an old good head)
One concern is if they are stronger and the belt or bearings go they could cause valve damage, I was lucky and just bent 2.8 push rods, but change belts and pulleys in good time and it should not be an issue.
Starter, alternator, turbo, power steering pump, water pump and most ancillaries will fit.
Vehicle: Vauxhall Frontera 2.8TDI LWB Modifications: 2.8 TDI LWB Pro Comp +2" ES9000 front Rear Rough Country +4" shocks with +2" Trooper HD Coils and 2" poly coil spacers added Trooper LSD rear axle waiting in garden to be fitted 265/75/16 Maxxis Buckshot Mudders on Mods Flipped BJ's Cold start and EGR valves removed. Particulate filter removed from Exhaust. Poly bushed ARB's Moved/Modified air intake Kinky rubberised floor Groovy foam A bar Uprated recovery points And other tittle tattle
geeves wrote:5mm longer stroke. I think the pistons will be pushing the head off the block.
How so? IIRC all the 4J blocks are the same size? I do know that swapping cranks to make stroker motors is quite common in petrol engines. Of course if no-one has hgeard of it done on a 4J it probably means that it won't work.
Would the 4jb1 benefit from other tuning methods? Porting and polishing? or larger valves?
It has been done with huge increases but no details on how much you can port things. Just wind the turbo up to 15 then advance the timing to just before it knocks and increase the fuel to just before it smokes. Mudlark had his wagon dynoed with these mods at 110kw and it was still reliable
Sanding your knuckles before starting work can help. That way you cant skin them
110kw.....by my reckoning thats about 150bhp, that'd be fantastic. Right now I am at 117bhp (86kw) with standard boost, pump and timing. Is Mudlark a member on here? Is there a build thread? Many thanks.