bathcollector Posted July 1, 2017 Share Posted July 1, 2017 I bought a '92 Townace van cheap today. Due to some overheating issues the PO has replaced the head with a new 3y/4y head but has used the 4y headgasket and it has been overheating still since, although not to the boiling stage. He was told after he should have used a 3y gasket but as it was his work van bought another and put this aside. As Seedy Al seems to be the resident BHG guy, maybe he can shed some light as to the 3y being different to the 4y ?? Quote Link to comment Share on other sites More sharing options...
kyteler Posted July 1, 2017 Share Posted July 1, 2017 @Seedy Al Quote Link to comment Share on other sites More sharing options...
tortron Posted July 1, 2017 Share Posted July 1, 2017 3y and 4y-e have slightly different water galleries, not interchangeable. *Gotta use the gasket to match the head Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted July 1, 2017 Share Posted July 1, 2017 There could be differences in water galleries in the gaskets. But, I have a few other questions you may or may not have an answer to. When head was replaced, was the thermostat and water pump replaced, ? But most importantly, was the radiator checked and cleaned out by a radiator shop. The last one is very important. Just running a hose through the radiator archives a little bit of cleaning but not nearly the same as a rod out. My money is on that the radiator was not cleaned when new head went on. 2 Quote Link to comment Share on other sites More sharing options...
Goat Posted July 1, 2017 Share Posted July 1, 2017 Also, If it was overheating, did the PO fix radiator etc? Or just fix the bhg. My van radiator was blocked as hell. got it rodded and its happy as larry now (with a new head). And Tory is bang on the nail, Make sure the head gasket lines up with the galleries on the head. The blocks should be sweet, but the heads will have an extra coolant passage or two. That some gaskets will block. I noticed this when i had the head off my van. My old gaskets and new gasket had these different holes. Quote Link to comment Share on other sites More sharing options...
Goat Posted July 1, 2017 Share Posted July 1, 2017 Bet me to it. Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted July 1, 2017 Share Posted July 1, 2017 We are so the same lol. I was thinking about your van when making thst post. However didn't you end up using what essentially was the "wrong" gasket yet its running fine and dandy? Quote Link to comment Share on other sites More sharing options...
bathcollector Posted July 1, 2017 Author Share Posted July 1, 2017 Thanks guys. Water pump was replaced but by the look of the water, the radiator wasn't cleaned out, pretty crusty in there. In looking round the internets, the 3y/4y gasket matching head vs block seem to differ ? Will check with PO next week re rad and t/stat though. The rad cap looks a bit shite too so won't hurt to chuck a new one on. Quote Link to comment Share on other sites More sharing options...
Goat Posted July 1, 2017 Share Posted July 1, 2017 I think Al was right, and that it doesn't matter with the headgaskets. The holes were 5mm diameter or something. Will most likely be the radiator. Quote Link to comment Share on other sites More sharing options...
bathcollector Posted July 1, 2017 Author Share Posted July 1, 2017 Looking at pics of them both, there are slight differences in them but don't look to be a problem. IRL looking at them could be different ? I will pull the radiator during the week and get it rodgered. Quote Link to comment Share on other sites More sharing options...
tortron Posted July 1, 2017 Share Posted July 1, 2017 ehh, I wouldn't insert restrictors into my water galleries expecially on a van. 1mm overlap is going to be like a 10% restriction on flow. not an issue if the rest of the system is good probably Quote Link to comment Share on other sites More sharing options...
bathcollector Posted July 23, 2017 Author Share Posted July 23, 2017 @Seedy Al OK, radiator has been away and come back cleaned out, 30 % blocked so wasn't a big part of the problem. Have put a new waterpump (old/new water pump was leaking from the seal) and thermostat in. Also a new radiator cap to go on. Pulled the head today and no sign of a blown head gasket. Head is a new Kiwi cylinder head. I have a new Kiwi 3y head gasket that lines up well with the head water ports etc. The only thing I noticed when undoing the head bolts is they didn't seem to be uniformly tight which would have shown up with a mark on the gasket I would have thought ??? Any bright ideas out there ? bung temp sender ?? In having a look at the Kiwi cyl. heads gasket, there is a port missing at the front that there is corresponding holes in both block and head. Ol cobber Josh at Manawathree Toyota ( Mark was on Tinder in the dunny) sent me a pic of the genie Toyota piece and it is also missing the port in the gasket ???? Head pic shows the port upper left just below the headbolt hole. Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted July 24, 2017 Share Posted July 24, 2017 If the genuine gasket doesn't have it, then its no used. Will find they either over engineered it in manufacturer and possibly to efficient. But anyway, that's fine. I don't really know what to tell you, but 30 percent is enough to cause an issue, as is a leaking water pump, a thermostat, or a fucked radiator cap. As you mentioned the head bolts, if you happen to have a spare, I would cut a slit up the side of one of them up the threads, then use it to clear out any shit stuck in the threads in the block. Make sure you use oil or anti seize on the head bolt threads and under the heads. Cant remember if these use washers but if so make sure they are lubed also. Based on everything you have done and it still has issues then yes could simply be a shitty temp gauge. In which try an aftermarket item and see how you go. 3 Quote Link to comment Share on other sites More sharing options...
bathcollector Posted July 24, 2017 Author Share Posted July 24, 2017 Chur. I'll bung it back together on the weekend and see how it goes. Bolt holes are all good and yep washers under the headbolts, ky gel all round. Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted July 24, 2017 Share Posted July 24, 2017 Just remember all bolts should feel the same going in. If you hear any squeaky noise or it suddenly turns easy when doing up you have issues with the bolts torquing on the threads. I know you know all this Gary, just adding it in case other people reading this don't. Quote Link to comment Share on other sites More sharing options...
bathcollector Posted July 24, 2017 Author Share Posted July 24, 2017 Always good to be reminded when you don't do this stuff everyday though. Us old farts forget a lot you know. Quote Link to comment Share on other sites More sharing options...
bathcollector Posted July 30, 2017 Author Share Posted July 30, 2017 Right. Radiator rodgered, new waterpump, new thermostat, new radiator cap, new viscous fan hub, new headgasket on. Been for a drive and all seems good. Temp gauge at half mast after 1/2 hour drive. Have a bolt left over though ?? looks like a seat mount bolt to me but ??????????? 3 Quote Link to comment Share on other sites More sharing options...
tortron Posted July 30, 2017 Share Posted July 30, 2017 Could be your loose screw? 3 Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted July 31, 2017 Share Posted July 31, 2017 Good good. Glad she is all sorted pal. 1 Quote Link to comment Share on other sites More sharing options...
bathcollector Posted August 1, 2017 Author Share Posted August 1, 2017 And pissed through for a W.O.F today. Better buy some shit to go in the back of it now. Quote Link to comment Share on other sites More sharing options...
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