B18FT head off. [Archive] - Turbobricks Forums

aibast

11-12-2007, 02:10 PM

Got the head off now. Future brings some light porting, valve grind and all new gasgets. No cracks no burnt valves - good. New use for Lesjöfors lowering springs box :)
http://www.album.ee/files/94/915/norm/11694915_N2cs.jpg

This is how all of it came out. With exhaust and intake manifold on it, fuelrail and so on.
http://www.album.ee/files/94/917/norm/11694917_sBPH.jpg
http://www.album.ee/files/94/918/norm/11694918_I0wz.jpg

As you know the renault lump has combustion chambers in the pistons.
But for boosting it from 0,5 bar to 0,9 and torturing the hell out of it, she looks good :)
http://www.album.ee/files/94/919/norm/11694919_ZJPd.jpg
http://www.album.ee/files/94/921/norm/11694921_o5kB.jpg

Billiam500

11-12-2007, 02:13 PM

I expected a turbo 544 or something. Still cool though.:cool:

WheyDey

11-12-2007, 03:10 PM

I expected a turbo 544 or something. Still cool though.:cool:

lol naw, aibast is our very own frog tuner!

Dr Dokeh

11-12-2007, 04:12 PM

Ah so that's what they look like, dish in those pistons must be quite big?

volvorsport

11-12-2007, 04:23 PM

not as big as teh dish in a b230k heron head .

the rods are tiny , ive never known one to break tho .

a diesel crank and rods are teh way to go for capacity and strength .

aibast

11-12-2007, 05:28 PM

The dishes are deap. Was suprised myself. Here is a cuttrough of the engine. You can see the depth. These engines do last well.
http://pageperso.aol.fr/RacingF7R/creve-moteurF.jpg

aibast

11-13-2007, 03:19 AM

and they have oilsquirters in the block for cooling the pistons. These engines are strong. Sometimes I think even stronger than the redblock for standing up to bigger hp raising %. I have it running @ 145% hp from the stock engine with out a problem. One guy took it to 250hp with stock internals with out a problem. That is 208% of stock power.
The head is off cos the turbo blew and as I already taken everything off the engine to change out the turbo, tought of doing some work on the head as well. + I need to change out the turbo oil line that is just under the exhaust manifold. A real headache to get to when the head is on. As the head is good from the factory there isn't much porting job to do. Only the intake and exhaust channels need some opening up. Otherways it good on the inside.
Some 480 enthusiast have suggested using a N/A cam to make the powerband smoother and let the engine rev up better. As always Volvo managed to make the turbocam work on low rpm and die on the top.

ozzy

11-13-2007, 05:22 AM

volvo do an amazing job of turbo cams!

having the k in my 940 it just keeps on pulling but with the t...............:grrr: no fun:-P

aibast

11-13-2007, 05:24 AM

In my 744 TIC I changed out the T cam for A and also worked a lot better. So I think the N/A cam is on the way.

Matt Dupuis

11-14-2007, 12:34 AM

Check your piston to valve clearance... Without a combustion chamber in the head, the valves don't have to be very far off the seat at overlap before bango poppo hiss.

aibast

11-14-2007, 03:45 AM

have got more info on the cams and the stock turbo cam is the safe way to go on these engines :( I just hope more free flowing exhaust will help the top end. The stock one was so restrictive. I must finish my car for the spring and make some vids for you here :)

But for a moment driving this winterbeater white ecobox. Pic taken today - 14.11.07
http://www.album.ee/files/03/833/norm/11703833_hPez.jpg

MikeHardy

11-14-2007, 05:15 AM

Check your piston to valve clearance... Without a combustion chamber in the head, the valves don't have to be very far off the seat at overlap before bango poppo hiss.

the NA versions of that 1.7 also runs chamber in pistons too. so it'd likely be ok

volvorsport

11-14-2007, 06:11 AM

it is ok .

aibast

11-14-2007, 06:55 AM

I'm still not sure what way to go. Cos I don't want the overlap to mess anything up. And it shouldn't hit the pistons with N/A cams.

MikeHardy

11-14-2007, 07:49 AM

the cam from a 1.7NA might be a nice improvement, i mean the 1.7 with no CAT was 105hp wasnt it whist the turbo was 120hp stock.

aibast

11-14-2007, 08:52 AM

The problem is still, that its N/A cam, it has overlap, while turbo cams don't have overlap

volvorsport

11-14-2007, 09:00 AM

well , a regrind can be costly , and youll need an NA cam to start with .

have you got all the specs on both cams to evaluate them for your own purpose .

This overlap you speak of , might be bad for a street grandad motor , not so different for a high HP one .

aibast

11-14-2007, 09:04 AM

The car it self came stock 120hp, mine is around 170hp now. Boost is 0,9 bar, bigger turbo and so on.

Matt Dupuis

11-14-2007, 09:13 AM

the NA versions of that 1.7 also runs chamber in pistons too. so it'd likely be ok

But does the NA version have cutuots in the piston for valve clearance?

I'm just throwin' out possibilities here - I've never seen one of these engines before, so you certainly shouldn't take my word that things are going to blow up.

aibast

11-14-2007, 09:18 AM

The NA doesn't have cutouts and the N/A cam is what some other 480 owners have suggested. But this also means I heed to check the valve clearances and so on.

MikeHardy

11-14-2007, 09:29 AM

The problem is still, that its N/A cam, it has overlap, while turbo cams don't have overlap

actually yes they do, they just don't have as much overlap as an aggressive NA cam (which the stock NA cam isn't), a serious turbo cam like KG's K2GT will likely still have about 72 degree overlap.

volvo for the B230ET used an A grind cam which was an NA cam in previous engines and other places in the world.

Edit sorry forgot to multiple KG x2 to get overlap

volvorsport

11-14-2007, 09:33 AM

the reground ones i had done , had more overlap , than the NA cam

aibast

11-14-2007, 09:39 AM

:) thanks for the info on the overlap. This takes the things to whole new light.
OU. just found out our coverment wants in here make all car tuning illegal :P

MikeHardy

11-14-2007, 09:49 AM

that sucks.
on the overlap thing it's just that usually turbo cams cut down on overlap and widen powerband by running wider LSA i mean take the KG B230 turbo cam

300degree overlap, 114LSA (so 72 overlap), one of it's better NA cams 305duration and 105LSA which comes to 95 overlap

aibast

11-14-2007, 10:35 AM

I think the best way to know is to try it out and see.

frpe82

11-14-2007, 02:28 PM

I think the best way to know is to try it out and see.
Yes. Do it.

Tamnakz

11-14-2007, 02:33 PM

Dude. I want to see pimp photos of your car.

aibast

11-15-2007, 04:00 AM

Dude. I want to see pimp photos of your car.

Here you go - some pics, No pimp ones :P Enjoy
http://www.album.ee/files/10/308/norm/11710308_PXS1.jpg
http://www.album.ee/files/30/752/orig/11130752_21Ig.jpg
http://www.hot.ee/aibast2/lihula480.jpg
http://www.album.ee/files/36/720/norm/11336720_Dl5O.jpg
http://www.album.ee/files/36/721/norm/11336721_xu9R.jpg
http://www.album.ee/files/36/725/norm/11336725_9hMU.jpg
http://www.album.ee/files/36/844/norm/11336844_1DQo.jpg
http://www.album.ee/files/36/913/norm/11336913_XQPD.jpg
http://www.album.ee/files/36/927/norm/11336927_vIqY.jpg
http://www.album.ee/files/36/950/norm/11336950_GKgl.jpg
http://www.album.ee/files/37/000/norm/11337000_zsZE.jpg
http://www.album.ee/files/37/016/norm/11337016_LMT8.jpg

And one pic with open popups :D
http://www.album.ee/files/61/107/norm/11161107_lOFu.jpg
http://www.album.ee/files/61/113/norm/11161113_M25L.jpg

aibast

11-24-2007, 08:40 AM

hehee, ok, here are some new pics

Finaly got my head cleaned somewhat up. grinded away the bad castings in the intake and exhaust channels. Cleaned the valves and so on. All I now have to do is but it all back together and then on the car :)
http://www.album.ee/files/84/110/norm/11784110_Jykt.jpg
http://www.album.ee/files/84/114/norm/11784114_7Ebl.jpg
http://www.album.ee/files/84/115/norm/11784115_5HJR.jpg
http://www.album.ee/files/84/119/norm/11784119_Gt9B.jpg
http://www.album.ee/files/84/120/norm/11784120_upMZ.jpg
http://www.album.ee/files/84/122/norm/11784122_CB27.jpg

foggyjames

11-24-2007, 10:39 AM

Those engines aren't even close to being as strong as a redblock, although they seem to hold together ok up to a shade over 200bhp (circa 15psi, with supporting work to match, etc), where making a headgasket stay together starts to be an issue. I imagine those skinny rods will be a problem soon afterwards. There are a few people here running close to double that boost on a (mechanically) stock redblock. It's a fun engine in a light car, but whichever route you take (including 16v), getting more than 250bhp gets tricky.

A friend uses the 2.0 NA version in a formula Renault single seater...it makes just over 200bhp with programmable management, a cam and a trick exhaust....and 7000rpm redline. Quite a good number for minimal work, I thought.

cheers

James

aibast

11-24-2007, 10:44 AM

on power I wouldn't go any higher running @ 0,9 bar. So only this head job and then its all in suspention and so on :) Maby I'll have some money left over some day for a RWD Volvo :)

aibast

01-21-2008, 12:42 PM

got his thing back in one piece
http://www.album.ee/files/89/349/norm/13489349_vOof.jpg

Port mached the intake - a lot of material was moved. Hope it helps a bit :)

volvo 4 life

01-21-2008, 04:03 PM

What engine is the B18FT based off of?

MikeHardy

01-21-2008, 04:56 PM

renault 1.7 from the 5 and the 19

Sander

01-21-2008, 06:40 PM

Renault named it the F9P (don't confuse it with the F9R which is the 2.0 williams engine :P)

aibast

01-22-2008, 03:37 AM

but they handle boost realy well. Mine has gone past 1,5 bar or higher with no problems (the wastegate airhose broke). As the ECU is tuned, there is no more fuelcut.

Ruben

01-22-2008, 10:44 AM

can't you get any stronger rods for these engines?

foggyjames

01-22-2008, 02:35 PM

I would imagine that rods aren't your limiting factor. Renault tend to be fairly generous with the 'meat' on their rods, and many of their engines will spin to 8k+ from the factory (whether or not they make good power up there!).

cheers

James

aibast

01-25-2008, 04:49 AM

Got my small T2 back from a rebuild. Soon I hope I'll be running again :)
http://www.album.ee/files/79/174/norm/13879174_1sNQ.jpg

it looked like this before, leaked oil in the exhaust side and so on
http://www.album.ee/files/65/678/norm/10965678_qatl.jpg

DaButcher

01-25-2008, 05:25 AM

Hi, I heard porsche reinforced the turbo engines for volvo, in the 400-series (atleast for the 480).

aibast

01-25-2008, 05:40 AM

Volvo got Porsche to develope the 480's 1,7 turbo engine. They made it to give out about 165 hp around 0,8 bar. Then Volvo detuned the engine to 120hp just to get back the Volvo feeling to the car. So the boost raising to 1 bar is realy safe on these engines. With a stock turbo, its awbout 175-180 hp. They also gave the car an electronic boost controller that is rpm dependant to save the gearbox. So the high boost comes on from 3000 rpm, and it keeps itself lower on 1200-3000 rpm.

Janspeed

01-25-2008, 06:35 AM

my friend used to run a 440T rallycar, GrA about 225bhp. The engine was not the problem, it was the differential, driveshafts and gearbox that got ripped apart.
eventually he just kept running it with an open diff, just to let the power escape into a spinning tire.
untill he crashed it because of a faulty pacenote...

JW240

01-25-2008, 11:29 AM

someone i know has a original 480 grp A turbo. It is one of the 2 ever built. a really cool car. engine has 230 hp, car has a roll cage, big brakes, fuel cell, coilovers, LSD etc :-D
the gearbox is the main reason why it never raced for volvo, it was too expensive to get it reliable for racing.

Ruben

01-25-2008, 11:39 AM

[QUOTE=JW240;1598657]someone i know has a original 480 grp A turbo. It is one of the 2 ever built. a really cool car. engine has 230 hpcell,QUOTE]

Never saw an engine in that car:-P

Ruben

01-25-2008, 11:45 AM

[QUOTE=JW240;1598657]someone i know has a original 480 grp A turbo. It is one of the 2 ever built. a really cool car. engine has 230 hpcell,QUOTE]

Is there an engine in that car?:-P

JW240

01-25-2008, 11:52 AM

there was an engine in that car till a few years ago, he even used it as a daily driver as far as i know :-P

aibast

01-26-2008, 08:34 AM

seen some pics of the Gr.A 480 and it looks just so cool. And yes, the clutch and gearbox is the weak ink. The stock clutch can handle a bit over 200hp and the gearbox goes @ about 250. But the car is so light that on stock 120hp level the power to weight is the same as 744 turbo.

foggyjames

01-26-2008, 10:50 PM

Then Volvo detuned the engine to 120hp just to get back the Volvo feeling to the car.
The Volvo feeling...aka slow :rofl: They really didn't understand how to help themselves, back in the 80s :)

cheers

James

aibast

01-28-2008, 04:01 AM

The Volvo feeling...aka slow :rofl: They really didn't understand how to help themselves, back in the 80s :)

cheers

James

You couldn't say it any better :D

aibast

02-13-2008, 08:54 AM

ok got the engine together today tomorow fluids and a startup after all these months :) hope to get my exhaust done soon also.

aibast

02-15-2008, 11:44 AM

Got her running again. Sounds like a tractor with no exhaust, Thats coming next. So at the moment:
From this
http://www.album.ee/files/94/919/norm/11694919_ZJPd.jpg

to this in a 2 days - 3 hours each day :)
http://www.album.ee/files/48/035/norm/14148035_EAsd.jpg
http://www.album.ee/files/48/037/norm/14148037_HeVS.jpg
http://www.album.ee/files/48/038/norm/14148038_uIcL.jpg

PRVersion

02-18-2008, 01:26 AM

so how does it go?

aibast

02-18-2008, 09:42 AM

before I can get her for a test run I need an exhaust, insurance and m+s tyres. So Still sitting in the garage at the moment. But making a vid of the test run :D

aibast

02-19-2008, 02:27 AM

got this crap out of my cell

<object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/5vDrIjAVw9k"> </param> <embed src="http://www.youtube.com/v/5vDrIjAVw9k" type="application/x-shockwave-flash" width="425" height="350"> </embed> </object>

For some odd reason youtube flipped the vid :wtf:

aibast

03-08-2008, 05:35 AM