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b21ft with b230 top end

W

wade454ss

New member
Joined
Jan 1, 2011
hello all. just a quick question. I'm swapping the top end on my b21ft with a 530 head and updating the fuel system and computers obviously in one swipe. My donor turbo is off a late model 940 with the small water and oil lines. I didn't know until tonight that these turbos were different even between the same models. I have 3 13c's on the ground and the best looking one that I want to use has small screw in inlets/outlets. My question is how to plumb this in with items from Lowe's. I see were some folks have made there own lines. OR should I just look to hit the JY and forage for what I need. Thoughts
 
I would recommend you buy the fittings and oil line you need from a place like atp turbo. I also bought fittings for this kind of stuff from pegasus racing. I bought fittings with one side matching the turbo and another fitting matching the engine block. The other side of both fittings has -4AN thread to match up to one of atp turbos oil lines. For the return I used a modified Volvo pipe with a high temp piece of hose to join them.
 
This oil feed line works, its a little longer then needed. But ideal for your using the 1/4 npt in the front of engine. You can remove banjo fitting on since it will not be needed.

http://shopping.kinugawaturbo.com/turbooilfeedlinekit1990volvo740withmhitd04turbo.aspx
32001054002A.jpg


Oil feed location - pretty ideal

OilPressureTestPort.gif



This is the block fitting you will need.

http://www.jegs.com/i/Earls/361/982344/10002/-1?parentProductId=749370
361-982304.jpg


Will post what I did oil return later.
 
BTW, all the TD04 turbos use the same banjo bolts. I've never encountered something different to say otherwise. Just use the stock water hard lines, no need to buy something else if you already have them.
 
runslikeapenguin said:
No, you want the B21 head gasket. It's the right size for the bore and it covers the combustion chamber without overhang.
Click to expand...

So use the bigger head gasket so the fire ring doesn't protrude into the combustion chamber?
Good idea.

Two votes smaller HG, one vote Bigger.
Let's see how many others can get it wrong.
 
After, 24 hrs didn't realize so many people had responded. My next off day is Monday and I will be taking all comments into consideration. One comment I can already field is the head gasket. I used a b21 head gasket as my research in the past had lead me there. It fit perfect with no cylinder overhang. I will take a few pics tomorrow and post so everyone see's the differences I'm speaking of. Maybe it's me and I'm mistake one turbo unit for another, but a pic is worth a thousand words. As always thanks to all that commented.
 
Edit: see post #18

<del>Regarding the head gasket...just thinking through it in simple terms, I believe a B23/230 gasket would be better b/c the ring that is meant to seal around each cylinder would seal better using the gasket with the larger bore than the smaller bore...reference below diagram of a simple cross-section of a block/cylinder head.</del>
 
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oldschoolvolvo said:
Regarding the head gasket...just thinking through it in simple terms, I believe a B23/230 gasket would be better b/c the ring that is meant to seal around each cylinder would seal better using the gasket with the larger bore than the smaller bore...reference below diagram of a simple cross-section of a block/cylinder head. :e-shrug:
M61rrW
Click to expand...

The 530 head is not a b230 cylinder head. There is no b230 cylinder head. B230s came with a 530, 531 and 631 cylinder heads. 530 is also used with b200 engines from factory, and those come with a 89mm bore. They use a b21 style/size head gasket.
 
Ok, if all the redblock cylinder heads have the same combustion chamber diameter, then my diagram is incorrect. I was assuming that the heads used on the B23/B230 engines had a combustion chamber diameter that matched the slightly larger cylinder diameter.

*Edit: I answered my own question...looks like my diagram only really would apply for putting a 531/405 head on a B21 block as the 530, 160 and 398 heads all have the same combustion chamber diameter. The 531 and 405 heads have a larger combustion chamber diameter.
Ref: http://www.turbobricks.com/specs/sohc_heads.php
 
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white855T said:
This is the block fitting you will need.

http://www.jegs.com/i/Earls/361/982344/10002/-1?parentProductId=749370
361-982304.jpg


Will post what I did oil return later.
Click to expand...

This is for a +t redblock, right? In that case..

For the front of the block, I would instead use this.
http://m.summitracing.com/parts/rus...YY4pm3NdjUYf1X2D8oa9uYybgAvQYUOFJwaAoi-8P8HAQ

Connected to this piece.
http://m.summitracing.com/parts/ear...27bnpdn-Rr0X_eF6-iSsPDfteS6m2uCBRoaAkJW8P8HAQ

The extra $7.40 for the second fitting is well spent because it means you don't have to take the harmonic balancer and lower timing cover off to tighten it down. But either way works.

Now thread this line onto that 90 degree fitting.
http://m.summitracing.com/parts/zex-ns6668

Then use a 4an banjo bolt to feed the turbo oil. I believe it is M10x1.5 mm (NOT M10x1.25, you need to make sure before you purchase. Hopefully someone knows for sure.) the link someone posted earlier has an oil restrictor in it. To my knowledge you do not need an oil restrictor, as all td04 turbos from the factory have one built in. Unless yours is an eBay turbo.

Scooby net says its m10x1.5mm to the turbo
http://www.scoobynet.com/general-te...ct-size-is-a-td04-05-oil-feed-banjo-bolt.html
 
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gashog said:
So use the bigger head gasket so the fire ring doesn't protrude into the combustion chamber?
Good idea.

Two votes smaller HG, one vote Bigger.
Let's see how many others can get it wrong.
Click to expand...

Wtf are you talking about? I just said it doesn't overhang into the combustion chamber. I went through all this BS misinformation when I built my engine. I actually have pics to prove this. Hold on . . I'll look for them.
 
oldschoolvolvo said:
Ok, if all the redblock cylinder heads have the same combustion chamber diameter, then my diagram is incorrect. I was assuming that the heads used on the B23/B230 engines had a combustion chamber diameter that matched the slightly larger cylinder diameter.

*Edit: I answered my own question...looks like my diagram only really would apply for putting a 531/405 head on a B21 block as the 530, 160 and 398 heads all have the same combustion chamber diameter. The 531 and 405 heads have a larger combustion chamber diameter.
Ref: http://www.turbobricks.com/specs/sohc_heads.php
Click to expand...

Exactly.

There are three bore sizes on redblocks from the factory: 88.9mm, 92mm and 96mm.

There are two combustion chamber sizes from the factory on SOHC heads: smaller on 160, 398 and 530 and bigger on 405 and 531.

There are two head gasket sizes from factory: one with approx. 94mm holes and one with approx 96 mm holes.

Bore size does not determine which head was used with which engine.
 
gashog said:
And use a B230 head gasket.
Click to expand...

You don't want to do this.

Gaskets
B21 Head gasket - 3.730" /94.442mm ID.
B230 Head Gasket - 3.865"/98.171mm ID.

Heads
530 Head - 3.657"/92.8878mm chamber width.
160 Head - 3.647"/92.6338mm chamber width.
531 Head - 3.676"/93.3704mm chamber width.

The B21 gasket will cover all 3 heads easily. I even suspect the width from head to head in the same type will vary the .030" i saw in difference between the heads. Essentially all the Volvo heads have roughly the same combustion chamber width.

The B230 gasket will leave a massive void over a 92mm engine bore that will collect carbon, mess with cylinder efficiency and become a magnet for detonation.

Can we stop spreading bad information now?


B21 gasket
eMIlVDa.jpg


B23 gasket
pv4bkZ8.jpg


530 head
4FZwz7C.jpg


531 head
7PsxIhl.jpg


160 head
f3Oc86K.jpg
 
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