Piston rings are worn. Never spun a bearing or anything. Just low compression numbers, around 95-100 per cylinder. It still ran when the head was on itJust didn't run very well

Kind of what I was thinkingI have a pretty clean, stock appearing 1991 GVR4. It has a walbro 255, FIC 950's, bastard 20g turbo, injen intake with maf and plug n play adapter, 1g vrsf front mount modified to fit, and an evo 8 ecu with plug n play harness. It also has an innovative wideband and...

Well I will probably be getting out of the dsm game for a while. Just until I can afford it as a project rather then a DD.My motor needs a complete rebuilt bottom end. I have a stock rebuilt cylinder head. I am just going to buy a rebuilt one from someone here on the forums. I have found...

Sweet! He said its been babied and will sell me thr long block for 1200 plus shipping.Is that price too good to be true? Or about right for a motor like this with 15k or so?Will/should it last as long as a completely stock rebuild?

Going to buy a rebuilt 6 bolt motor from a guy here on the forum. He's selling a motor that was rebuilt about 15-20k ago using Wiesco 8.5:1 pistons with eagle hbeam rods, bse, l19 head studs, cometic gasket, bc springs and retainers, 3G liftersSeems like a real nice set up. I know the stock...

Well the guy said he spray painted it just because it was out, he wanted to make it look nicer?My question now is, could I do a very basic rebuild of my current block for around 800-1000? It probably does need to be bored over, there is a scratch in one of the cylinders. Might hone out but I...

Yea I guess I could be wrong about the valve marks on the top of the cylinders. Maybe it is just carbon build up that makes them less noticeable.

One thing I did notice, is the marks on the piston head for the valve clearance all look pretty deep still. As in there not real worn down like the ones on a 100k plus motor. The ones on my piston heads are worn down and not as deep of a groove anymore.Is that something to look at to consider...

I am going to look at a used shortblock, ill post some pictures of it. Just nervous because the guy said it was re built/re ringed. Im buying it because my current motor has fried rings and low compression. I just dont want to waste money on a junk shortblock when I already have one. I know i...

Is the 68hat still arguably the best street turbo for pretty decent power with not too much lag? Or has someone come out with a better "version"?

I have a couple options in front of me for my gvr4. Motor needs a rebuild, rings are gone and one ringland broke. The cylinders will have to be bored, hot tanked, decked probably align honed. Compelete rebuild kit plus time and tools. I'd have the head rebuilt. Would love to build it up tobhold...

What would cause mulitple lifters to fail at the same time?I removed the valve cover, a few rockers have a slight amount of play. I know that would first lead you to believe that the valves are bent but timing is spot on.While looking at the valves that have play in the rockers, I can...

Ill check mechanical timing again. My cylinder head is a brand new rebuilt, but the needle is a little jumpy at times. But it is mostly steady. I believe I just have a slight intermediate misfire at idle which is what I think causes the needke to be a little jumpy? Like I said it doesn't always...

Yea wet compression and leakdown are on the to do list when I have time. After those numbers I didn't tgink the car would even be driveable. Like I said though it runs and drives fine. That low of compression should yield some kind of driveability issues right?Is it possible to fry the...

Does a loss in compression always result in a loss of vacuum?I did a compression test and got some pretty nasty numbers. Car seems to run and idle great though. Also at idle, aroind 950, I am pullsing a vacuum between 16-20 in.Numbers on two cylinders were 120 and the others were 90...

Well I guess what confused me was, now that I did a little more reading, is the 4g63 has a batch type injection/ignition system as opposed to a sequential type system.I believe this is why I was so confused. I was thinking the injector only fired one time per crankshaft revolution, on the...

But the injector only fires on TDC for the compression stroke correct? It does not fire on the exhaust stroke. So I would still need to find TDC on the compression stroke?So correct me if I'm wrong again, but the evo 8 ecu is going to fire the number four injector as the number one injector...

I have two timing questionsFirsy one is, isn't it possible to have timing 180 out? Not 180 out like the dow pins are at 12 oclock and the notch on the dampner is opposite of the T on the timing cover. I mean the number one cylinder is at TDC on the exhaust stroke instead of the compression...

I just went ahead and removed the head, I sure did scratch head gasket prettt good. Got it off in 45 min!Thanks for the help!

So I spent some time doing a head gasket on my gvr4. Being a husband, full/overtime worker and father to a two year old I don't have much spare time. Did most of the work was done after dark in the street with very little light. I must have scratched the gasket when putting the head on. It's...

Thank you. So running the fp2 intake with the stock exhaust cam I have wouldn't benefit me at all?

AThat is the large letter

Its a stock turbo exhaust cam from a 1991 galant vr4...will I benefit from running the fp2 intake vs the stock intake?

Would I be able to run a comp cam 101200 (fp2 ) intake cam with the stock exhaust cam? Would there be any problems/adverse affects to doing this?Or would running the stock cams be best until I get my fp2 exhaust csm fixed?Basically I'm trying to figure out if ill benefit from running...

I appreciate all yalls help very much. I have a machine shop in town that I'm going to take it to tomorrow and see what they will charge to do it. If not ill ship it off to Delta cams and have it done there. So thank you very much for that also.I might either wait to get it fixed, run the...

Funniest thing ive read on this forum!

Curious now as to why the exhaust cam has a notch on it? Because the intake cam also has a notch on it?

I basically had some parts laying on a tarp including my battery and cams. One way or another the battery got knocked over (cough cough wife). And the battery acid ended up on my fp2's. Its on the exhaust cam on the end opposite of the cam gear.Ruined or useable?

Timing was spot on....like I said the valves are not burnt nor bent

What can cause multiple valve seats to go bad? The valves aren't bent nor burnt but about 8 valves aren't seating correctly.Any help?

Im pretty sure I lifted my head this past weekend. Car started to overheat and was pouring out white smoke. I took the head off and the headgasket doesn't show any signs of being blown. While I was removing the head bolts, though, the front bolts were pretty loose while the rears were extra...

Pulled my head on my 6 bolt to do a head gasket. I don't see any signs or having bad or burnt piston rings. Nor did I have any prior to tearing it down, but is there a way to test them. I mean can I poor a little oil in each cylinder and see how fast it flows past them?Just for peace of mind...

My current set up is a 1991 gvr4 with a bastard 20g internally gated, fic 950s, 1g vrsf intercooler kit, fp2 cams and a walbro 255. Running 20 psi on 93 octane, with afrs about 10.5 to 11 by redline.Im having a problem with spark blow out. I bought some brand new 6's and gapped them at .025...

5013771 CHINA 219D 90/01That's exactly how its laid out also...on the bottom of the manifold

Needed a new exhaust manifold, found one locally for 40 bucks.I didn't notice until I got home, that it says china on it. Here it is, were there china made copy cat cast manifolds? If so, anyone know the quality? Seems to be of pretty good quality.Sorry cant get the picture to...

Well im just running a bastard 20g with some fp2 cams and some f.i.c injectors at 20 psi with 10.5 to 11 afr. I know for sure its spark blow out though, it was much worse with the old plugs. I originally gapped the new plugs at .028 and it helped compared to the old plugs but still bucked. I...

I'm curious as to at what lbs/min spark blow out can happen? I understand there is many factors but a ballpark lbs/min.I'm running brand new 6 plugs gapped at .025....and its blowing out at full throttle

Going to run a half honda radiator for clearance reasons. I bought one from a guy here locally for 30 bucks just to see how well it cools and fits.It is a 2" thick two row radiator. Now I'm looking at getting a new one and I see a 3 row 2" option available. My first question is, if the 3...

So would this fit/work on our 4g63? I have a 92 gvr4 and the guy said he'd sell it for 75

Eclipse GST GSX turbo manifold Ceramic coatedAnyone have an idea. I needca new manifold badly.Of coursr I don't think I'd pay what he's asking!

What do the stock fans flow?? The car never really overheats, it just gets hot. As in it usually will get up to about the second mark on the stock gauge. Its been around 105 degrees here so coupled with the smaller radiator and the crappier fans it gets warm.As for burping, ducting, and...

I own a gvr4 and have recently installed a scirricco radiator do to also installing a front mount that wont clear the factory radiator.I have one 12" cooling fan pulling air on the radiator and one 10" fan pushing air on the condenser. Yes I still have and am keeping the a/c. Both fans are...

I just mocked up a 1g VRSF kit. It wasn't too bad, I had to trim the passanger side bumper beam mount, had to remove a bracket on the driver side by the a/c lines, had to trim a little in that spot and then trim a little on the passanger side to fit the piping through. Also had to trim the...

I'd boost leak test it before throwing parts at it anymore. A boost leak can definitely feel like a misfire

I need a half radiator, kind of in a bind. Will a factory half radiator from a 97 honda work? like the one from autozone, oreillys etc?If not which one will?

Have you gone by and looked at the car?Find a more trust worthy mechanic, and he cant legally keep your car if you pay the billYou can get it towed without a trans also

Yea, I know the timing map will need to be adjusted based off what works well with the car.I guess what I really need to know is the base timing?

That's like asking if you should use a 16 year old condom!I'd change it man!

Yea but I can adjust timing via ecuflashShould I maybe look up the 1g timing map and copy it over to the evo 8 ecu?

Put an evo 8 ecu in my gvr4. I need to redo my ignition timing but im trying to figure out the best way. I cant go back to my 1g ecu anymore so im stuck trying with this one.Basically should I just put it to 5 btdc? Also since the firing order is opposite id use the number four plug wire as...