bg radiator into bh

[ajb86n]

hey all

was wondering if i can bolt a bg radiator into a bh they are similar apart from bg model has 2 small hoses come of the bottom aswell as the bottom radiator hose however my bh rad doesnt have the 2 extra hoses off the bottom can i just block these up everything else seems to fit perfectly any help would be great

cheers

[megamac]

The two small hoses may be an auto transmission cooler? Not sure

[ajb86n]

do you think i should block them up and see or am i asking for trouble doing this

everything else is identical to my bh5 rad

[Zenki]

If they are little metal hose barbs, they are for the transmission cooler and you can blank them off no problem.

[ajb86n]

yea they are zenki was just a little nervous as its my daily dont want it blowing up or anything

any hints on refilling radiator and getting air out

[megamac]

Fill it up, leave radiator cap off and start your car, heater on full temp fan on half. Leave it running till it warms up properly and the bubbles stop coming up out of the top tank.. And make sure you use coolant not just water

[Zenki]

The system is self-bleeding to an extent like most Japanese cars. Following should suffice for you:

- jack up front of vehicle (or park facing uphill)

- fill system , leave cap off

- turn heater on, hottest temp, minimum fan

- leave engine to warm up

- allow to cool

- top up coolant if necessary, close cap

Level in overflow bottle may drop after the first few drives, this is normal. If it doesn't stop dropping then you're losing coolant.

[ajb86n]

thank you so much lads really appreciate your help

[ajb86n]

Quick update done as said above let the car cool down topped fluids up and took it for a drive and noticed it overheating and heater isn't blowing hot have I not got rid of all the air bubbles??

[ajb86n]

Also noticed only 1 radiator fan seems to work now any ideas

[Rosssub]

Probably not, how's the coolant levels? Header tank and overflow reservoir. If the car is just idling when the thermostat opens then the water pump/coolant isn't flowing fast enough to push the air bubbles out. I do it this way (workshop manual).

2. FILLING OF ENGINE COOLANT

1) Fill engine coolant into radiator up to filler neck

position.

Engine coolant amount for refill:

MT model;

Approx. 7.7 2 (8.1 US qt, 6.8 Imp qt)

AT model;

Approx. 7.6 2 (8.0 US qt, 6.7 Imp qt)

CAUTION:

The SUBARU Genuine Coolant containing antifreeze

and anti-rust agents is especially made

for SUBARU engine, which has an aluminum

crankcase. Always use SUBARU Genuine Coolant,

since other coolant may cause corrosion.

2) Fill engine coolant into reservoir tank up to upper

level.

3) Attach radiator cap and reservoir tank cap properly.

4) Warm-up engine completely for more than five

minutes at 2,000 to 3,000 rpm.

5) If engine coolant level drops in radiator, add engine

coolant to filler neck position.

6) If engine coolant level drops from upper level of

reservoir tank, add engine coolant to upper level.

7) Attach radiator cap and reservoir tank cap properly.

Edited September 5, 2015 by Rosssub

[Rosssub]

The second fan is for air con and over heat temps (95c-100c+). Use test mode to check they work ok.

[Joker]

BG / BH radiator have different top hose locations?

wouldn't need to blank off the auto cooling lines either? not quite necessary unless you plan to pull it out & reuse it one day? maybe plum in as a oil cooler

[Scoobydoo]

 Joker said:

BG / BH radiator have different top hose locations?

Yeah this is what I would've thought too. BG / V3/4 radiator has the top hose on the drivers side of the radiator, BH / V5/6 radiator has the top hose in the centre.

Totally different.

[Guest]

V5/6 is on the side. V7- is central.

[ajb86n]

checked this morning when i got home and resivoir tanks still full so will just add more to the radiator this morning and see how that goes

note heater still wont blow warm air not to sure why will give updates soon

[Rosssub]

 Joker']BG / BH radiator have different top hose locations?

wouldn't need to blank off the auto cooling lines either? not quite necessary unless you plan to pull it out & reuse it one day? maybe plum in as a oil cooler

[quote name='Scoobydoo said:

Yeah this is what I would've thought too. BG / V3/4 radiator has the top hose on the drivers side of the radiator, BH radiator has the top hose in the centre.

Totally different.

Just need to use the radiators matching top hose.

[Guest]

But v5 6 crossover come out on angle not straight.

[Rosssub]

 evowrx said:

But v5 6 crossover come out on angle not straight.

So does BH rev A/B/C. Straight crossover starts at Rev D/V7+.

[Joker]

is it turbo? Cos I;ve never seen a BE/BH with the top inlet on the side like a BG, pictures would help

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Edited September 5, 2015 by Joker

[Joker]

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[Rosssub]

Correct BH radiator top hose port is in the centre of the radiator. To put a BG radiator into a BH, use a BG top hose.

Same with a V5/6 radiator into a BH, use the matching V5/6 radiators top hose. The alloy block crossover pipe is still in the same location up to Rev D/V7 where the angle changes slightly:

[ajb86n]

correct i got a v6 bg rad i think he said radiator is the same in everyway bar two hoses that come off the bottom

ive just topped up coolant and heater is now working gona let car cool down and take it for a drive hopefully it doesnt over heat on me

thanks heaps for your help every1 will pop back in soon if any more problems arise

[Rosssub]

 Rosssub said:

Correct BH radiator top hose port is in the centre of the radiator. To put a BG radiator into a BH, use a BG top hose.

Same with a V5/6 radiator into a BH, use the matching V5/6 radiators top hose. The alloy block crossover pipe is still in the same location up to Rev D/V7 where the angle changes slightly:

Block alloy crossover pipe angle changes to straight forward at Rev D/V7:

[Guest]

Oh so v5/6 beh abc are all side entry/angled crossover and rev d v7 are straight/centre.