The V8 Owners Forum -

my thinking is that the 3 to 4 thou dimension mentioned earlier is not enough.The linear expansion for the alloy is 0.000023 per degree C and for the cast iron liner is 0.000015.So working the sums out for a 88 degree thermostat goes as follows.lets say the average alloy bore size is 3.850" X 0...

hiya Chris thanks for the post,I had already seen this post and the videos,I also read another post relating to des hammels book on the rover v8 and that mentions an interference fit of .007" so this is a bit confusing.I thought I would post the topic hoping to get advice from some reputable en...

Happy new year to all you petrol heads! Has any of you lot got any info with regard to the amount of interference fit of the liner to the block bore diameter of a 3.9 rover engine? I can work the thermal expansion rates out for the alloy block and cast iron liner,I just wanted to know the manufactur...

Thats the very same hone I have infact I think I have two.Thanks for all your help,I will let you know how the rebuild proceeds,twinpipes!!! P.S. I have ordered the parts from realsteel and they have got the viper cyclone cam in stock.Has any of you lot used this camshaft,its realsteel DW252, it has...

I have both a glazebuster or carborundum hone,which would you prefer to use.I will try realsteel on monday with regards cam and order some new rings then.Many thanks twinpipes!!!

Thanks for the reply perry I like the Bgt,my older brother had a many B/s a 64 pull handle roadster,british racing green with a roll cage jag wires bucket seats loads of race numbers stuck in the boot,I think it was someones hill climb classic before he got it in about 79/80,it went well but not qui...

Does anyone know the wear limit on a low comp/38D 3.9? My bores are 94.12 mm thats 4.8 thou in old money, would these glaze-bust and re-ring,what do you think.I am fitting a new cam in it,and thinking of real steels viper cyclone DW252,a cloyes street true roller timing set,and will I need uprated v...

Sorry Dave I mistaken you with the link ExtraEFI on the forum.Thanks again for your input!!!

Hiya,Dave thanks for the reply.I have looked on your website a few times,but am still unsure of the best option,I would like to get rid of the dizzy and the airflow meter.The engineering side of modifications necessary to swap to mega-squirt is no problem.Perhaps you can advice me better if I give y...

hiya,it was the inlet guide,they are the realsteel modified ones/bulleted & take the full hooded stem seal.I know they are self supposedly self lubricating.I have not got any further as yet,but what do you think could cause the problem.It is only the one inlet valve on cylinder number five.I wou...

The engine build and work and all guides were reamed by my self.I am a toolmaker by trade. Can any of you give the correct working tolerance/limits for the valve to guide clearance,so has I can double check the others whilst the motor is down. Thanks again twinpipes!! Just looked in haynes manual an...

Hiya,the new guides had been reamed,because you can not fit the valve in the newly fitted guide without reaming them.I will check with regard to the injector on that cylinder being at fault,this sounds plausible,but as it went into limp mode because of the miss-fire all the plugs are well black.The ...

Has anyone else had a problem with any valves galling/picking-up on the stem diameter in a new modified bullet guide with the full hooded type stem seals fitted? I recently rebuilt the heads on my 3.9 range rover,with new modified/bullet guides and hooded stem seals,it had been running better than e...

we all,perhaps some better than others understand the theory of the internal combustion engine,that is why we like the big v8,speed,performance,acceleration,its why we make these mods,or have them done by others.Getting as much in,a big bang at the optimum time & back out & using these pulse...

Thanks for all the replies/info.Heads are back on + inlet manifold and headers,just another question,the engine was a low compression 38D suffix A. The head gasket was gone between pots 1 & 3 stripped thread in the block it was not even torqued up it was replaced some years before my purchase I ...