aseychell

I bought a Felpro HS7733PT15 which in reality is for a TBI engine. Will I have any issues if I use them on a TPI engine? Most of all I need to use head gaskets, inlet gaskets and valve seals. I think TBI and TPI engine are the same excluding the plenums correct? I know that for the TPI runners and plenum I have to get another set.


Thanks

daferris

iTrader: (8)

You are correct the only real significant differences one-piece or two-piece rear seal for the intake get Fel-Pro # MS 93160 for the upper TPI tube and plenum gaskets the stock head gaskets for a TPI and for TBI motors are both .021 inches compressed thickness

daferris

iTrader: (8)

You are correct the only real significant differences one-piece or two-piece rear main seal. for the intake get Fel-Pro # MS 93160 for the upper TPI tube and plenum gaskets the stock head gaskets for a TPI and for TBI motors are both .021 inches compressed thickness

aseychell

Thanks mate. Much appreciated

Drew

iTrader: (58)

You might want to shop around a little. There are a lot of gaskets in that set that won't be used, and others that shouldn't be used. The aircleaner gasket, TBI base gasket, one of the EGR gaskets, the exhaust gaskets, and at least half the valve seals would be leftover, if I used that set. Obviously the various TBI gaskets won't be used. The exhaust gaskets shouldn't be used (GM didn't) they'll just burn and blow out. You can generally run the spring jacketed valve seals on both the intake and exhaust valves without machining on 083 heads. Or you can upgrade to the full metal jacketed seals from a later SBC - a set for Vortec trucks slip right on. The old style seals never worked very well. Also, the stock rubber valve cover gaskets, usually don't go bad. Inspect them, if they aren't rock hard, cracked, visibly leaking, they can generally be reused.

Given your location, you might have limited options, but it'd probably be worth looking into what it'd cost to buy the full TPI intake set FEL-PRO MS930351, and a pair of head gaskets, or piece together exactly what you need with upgrades and no leftovers.

aseychell

I already have the full TBI set which includes the head gaskets and have the felpro MS930351 on the way. Didn't quite understand the valve part. Why shouldn't I use the rubber seals? Heads are 193 and as far as I saw they do have these seals. Will know for sure tomorrow as I am going to remove the valves.

Re exhaust gasket I have an Edelbrock 4 in 1 so I think I will need these.

Drew

iTrader: (58)

193s are TBI heads. So it's not a stock 350 TPI?

They probably used those seals originally. That doesn't change that those exhaust seals are garbage. There's a reason that GM went to positive valve seals on the intake and exhaust valves on the Vortec heads. At the very least, I'd get another set of intake valve seals and use them on both the intake and exhaust. If you were starting with nothing, I'd use the Vortec seals since they seem to be easier to find locally, and one set does all 16 valves.

The same applies to the exhaust gaskets. They're not header gaskets. They dont work well with manifolds or headers. GM never even used them. Personally I'd make sure the exhaust flanges and the surface of the manifolds or headers are flat, straight, clean, and skip the gaskets.

aseychell

Yes apparently it is a TBI head. Am trying to keep costs low in this area as the scope is to have a reliable machine rather than a racer. I have an opportunity to get a set of 113 heads which I think are superior to mine but I will leave that as a last resort. After all the engine was running fine before I dismantled it purely for cleanup and gasket change.

aseychell

New day, new problems...
While cleaning up the drivers side head I noticed quite a deep pit (in the sense pitted) between chambers 3 & 5. Strangely enough this deep scratch is deeper in the middle between the chambers but it does not extend till the chambers themselves. This is only by a fraction of a mm so this will have to be fixed. I am planning of taking it to a shop for filling with welding than skimming of the whole head to ensure a plane surface.


I then went to check the engine block face and unfortunately on the same location between pistons 3 & 5 there is a similar mark. This time it is located more towards cylinder 3 and it is infact extended towards the cylinder bore. This location is a bit problematic as I don't think they can fill it with welding due to the material of the cylinder sleeve (I stand to be corrected here)


If I were to face the whole driver side block to eliminate this problem between 3 & 5, and knowing that most probably the block has already been faced once (as the engine number on the passenger side can be barely read) I will probably end up with interference between the valves and the pistons.


Coming to my question... Do you guys know if I can find thicker head gaskets to make up for the material that I am going to remove from the engine block?

daferris

iTrader: (8)

Not sure of the part numbers but if you go to for example summits web site you should find them EZ just get ones with more than .021 inches compressed Thickness. I know .040 is available

aseychell

So standard is.021. I assume the felpro head gaskets that I have in the HS7733PT15 set are standard.021 then.

daferris

iTrader: (8)

The box that the set came in should list the Fel-Pro number for the head gasket (not the number for the set just looking for the number on the head gasket it'self) Then you can either contact Fel-Pro directly or look for that part number to confirm the thickness. Looking at this link from the info about the set and was was in the set I bought for my motor a year ago. My guess is the ones you have now are the .040-.041 ones...
http://fme-cat.com/livedocs/PermaTorque.pdf

aseychell

Will check if I have the individual part numbers on the box. Thanks