Tr7 waterpump

[Ebz829]

Hi all,

Hope someone on here can help,justrefurbished tr7 ,1981 car and now doing waterpump,as it was leaking at the engine block hole below pump coast outlet ,got refurb kit from Rimmer Bros ,who I must say provided a great service in supplying parts ,ordered late on Thursday and received next day ,am not a employee !!!!!!.

On completion of rebuild cannot get pump to locate fully into housing ,manual states do not force or hammer into place ! it fits in so far but will not locate further to accommodate pump cover,before completion of rebuild,I tried brass cage in its recess , it only went in about sat 70/80 %,was tight .so have assumed that this is the problem ?,watched a tube video from Rimmer Bros re stag pump,with all intent and purposes,looks very similar to tr7,I think it was obviously a new pump being fitted ,but it located without any problems,fully inserted into block ,have checked my block opening and all seems ok?

In the position I am getting ,not fully home ,can still turn crank shaft ,and pump turns,,so obviously pump shaft engaging with jackshaft ,do not want to tamper to much with block opening at this moment , the brass cage is good as is the block opening ,the cage will need to sit its top lip flush with block ,any ideas .

Thanks 

Ray 

[dave.vitesse]

Hello Ray,

It sound as if it's not fully engaging with the jackshaft due to slight wear on the gears. You have to try the pump gears in different positions, also turn the pump impeller and wind it in whilst pushing it down/in.  Other areas, don't put too much oil in the bottom shaft bearing, the one in the block. And use a very small amount of rubber grease on the outers of the O rings. The picture shows a water pump in the correct position.

Dave

[Clive]

18 hours ago, Ebz829 said:

Hi all,

Hope someone on here can help,justrefurbished tr7 ,1981 car and now doing waterpump,as it was leaking at the engine block hole below pump coast outlet ,got refurb kit from Rimmer Bros ,who I must say provided a great service in supplying parts ,ordered late on Thursday and received next day ,am not a employee !!!!!!.

On completion of rebuild cannot get pump to locate fully into housing ,manual states do not force or hammer into place ! it fits in so far but will not locate further to accommodate pump cover,before completion of rebuild,I tried brass cage in its recess , it only went in about sat 70/80 %,was tight .so have assumed that this is the problem ?,watched a tube video from Rimmer Bros re stag pump,with all intent and purposes,looks very similar to tr7,I think it was obviously a new pump being fitted ,but it located without any problems,fully inserted into block ,have checked my block opening and all seems ok?

In the position I am getting ,not fully home ,can still turn crank shaft ,and pump turns,,so obviously pump shaft engaging with jackshaft ,do not want to tamper to much with block opening at this moment , the brass cage is good as is the block opening ,the cage will need to sit its top lip flush with block ,any ideas .

Thanks 

Ray 

as Dave says, it should go in with a little faffing.

Just a quick question. Did you inspect the impellor where the seal runs? It seems that is the root cause of many waterpump failures. A recon pump will usually have that area re-faced in a lathe. When I refurbished my pump (TR7 engine in a Toledo) a ceramic ring was supplied, and required 6mm or so machining off the impellor face and the ring glued in place. Seemed a great idea, and 5 years on with intermittent use is still all good.

Re suppliers, Rimmers are good on delivery, but sometimes lack knowledge.

Good suppliers I have used for the slant engine are Robsport, and sometimes LDparts (stag specialist, site a bit clunky but he is a real enthusiast).

[Ebz829]

On 06/03/2021 at 13:27, Ebz829 said:

Hi all,

Hope someone on here can help,justrefurbished tr7 ,1981 car and now doing waterpump,as it was leaking at the engine block hole below pump coast outlet ,got refurb kit from Rimmer Bros ,who I must say provided a great service in supplying parts ,ordered late on Thursday and received next day ,am not a employee !!!!!!.

On completion of rebuild cannot get pump to locate fully into housing ,manual states do not force or hammer into place ! it fits in so far but will not locate further to accommodate pump cover,before completion of rebuild,I tried brass cage in its recess , it only went in about sat 70/80 %,was tight .so have assumed that this is the problem ?,watched a tube video from Rimmer Bros re stag pump,with all intent and purposes,looks very similar to tr7,I think it was obviously a new pump being fitted ,but it located without any problems,fully inserted into block ,have checked my block opening and all seems ok?

In the position I am getting ,not fully home ,can still turn crank shaft ,and pump turns,,so obviously pump shaft engaging with jackshaft ,do not want to tamper to much with block opening at this moment , the brass cage is good as is the block opening ,the cage will need to sit its top lip flush with block ,any ideas .

Thanks 

Ray 

Hi thanks for reply.managed to get it done,had loads of info from the tr7 clubs, part built pump into cage and inserted with plenty lube on cage and block body ,used the impeller nut screwed home and tapped into place with rubber mallet ,no leaks now so looks ok ,if it does leak again ,know the procedure to redo , unfortunately can't get new impeller so will need to keep eye on it ,thanks to all who replied