Derka Posted October 26, 2015 Share Posted October 26, 2015 (edited) I saw this come up on Gumtree reasonably local to me and dismissed it as it was Nitro and I didn't know what it was. The Advert just said "Nitro 1/8th Buggy".After a Google I came to the conclusion it was some form of HPI Savage. I posted on here and it was, which was great news. Its a Savage X F4.1 (https://www.hpiracing.com/en/kit/859)It was advertised at £100 and he took £80 for it since it needed some work as the glow plug had stripped the threads in the underhead button and as such, the glow plug kept popping out.I thought it may need work (hopefully the engine actually runs!?) but its something new for me to learn being my first Nitro. It came boxed with manual, spares and other random odds and ends.Ive not done much apart from taken all the shocks off and cleaned the bodies and springs and checked them over. 2 of the 8 have bents shafts which I have straightened enough but some new shocks will be needed. 2 of 8 had good oil, the rest are low and full of bubbles.Ive noticed the spur is stripped but a new spur is included.I carefully set about removing the cooling fin and checking what was underneath as a member pointed out there should be swarf somewhere. There was! The underhead button is completely stripped - I can only assume from brute force and/or removing/inserting the plug when the underhead button was hot and stripped the threads. Similar to a real car engine when changing spark plugs I guess?How does the cylinder bore look to you guys? Is it supposed to be so dirty? Think it will run? It turns over when I rotate the clutch bell(?) and makes a honk type sound so hopefully has some compression.One of the wheel nuts was so tight and previous rounded off I had to use heat and brute force to get it off. Are they metal or tough plastic?List of bits that need to replaced so far2 Shock ShaftsShock Oil all round (What weight?)Replace spur gearUnderhead button (I have 3 glow plugs, 2 work so should be OK on that front as their threads are good)4 New wheel nuts (Upgrade alloy/metal parts available?)1x Rear Axle shaft (Heat has knackered threads, might be salvageable)Upgrade to 2.4GHz Radio Gear Edited November 3, 2015 by Derka Removed pictures Quote Link to comment Share on other sites More sharing options...
Derka Posted October 26, 2015 Author Share Posted October 26, 2015 Replaced the spur gear, a lot easier than I had thought. Great design HPI.Think I'll check the diffs tomorrow Quote Link to comment Share on other sites More sharing options...
mrpotatohead Posted October 26, 2015 Share Posted October 26, 2015 get a few cotton buds and give the cylinder head a good clean as little bits of metal from the stripper button head could cause damage to the engine, if it hasn't already.apart from that it looks like a real bargain for £80. Quote Link to comment Share on other sites More sharing options...
mrpotatohead Posted October 26, 2015 Share Posted October 26, 2015 Also all the black stuff on the engine is from it running too lean and hot so when you rebuild start of slow with the engine and gently brake it in.also a better idea to clean is by using WD-40 but nothing that you have to rub off. Quote Link to comment Share on other sites More sharing options...
Derka Posted October 26, 2015 Author Share Posted October 26, 2015 Thanks. I'll take a look again at the engine tomorrow and clean some more. The low speed and high speed needles do seem to be screwed in quite far. I'll reset them both flush once I'm at a point to start the engine and tune. I hope the engine is ok... Had a look and replacements are more than I paid for it... That's the risk I took though. Could always convert to leccy should it come to that. Is the engine hard to remove? It looks like 4 hex screws from the underside? Quote Link to comment Share on other sites More sharing options...
jordan_bench10 Posted October 27, 2015 Share Posted October 27, 2015 I wouldnt bother converting to leccy with the cost involved bp diffs etc. Lrp zr.32 will do the job nicely :-) Quote Link to comment Share on other sites More sharing options...
Derka Posted October 27, 2015 Author Share Posted October 27, 2015 Stripped down the front diff today and re-greased. Rear to do tomorrow Quote Link to comment Share on other sites More sharing options...
mrpotatohead Posted October 28, 2015 Share Posted October 28, 2015 looks like its going good so far, also the engine is very easy to remove just unscrew the 4 screws and lift it out gently and then boom its out Quote Link to comment Share on other sites More sharing options...
Derka Posted October 28, 2015 Author Share Posted October 28, 2015 Yup I've had the engine out and taken off what I can. Got stuck at the 3 clutch shoes though. Left them alone and just cleaned the low speed needle out and slide. Cleaned up the plastic exhaust too. Are the aluminum ones much better or just for looks?I added some drops of after oil and cycled the engine a few turns and left it at BDC. Front diff was all good. Just gotta buy the underhead button and axle stub along with some wheel nuts and hopefully it will start! Quote Link to comment Share on other sites More sharing options...
Derka Posted October 28, 2015 Author Share Posted October 28, 2015 Ordered some parts so I will hopefully know if the engine will run this weekend!HPI# 86121 http://www.hpiracing.com/en/part/86121 - The current washer is elipictal and well worn on the end of crankshaftHPI# 1448 http://www.hpiracing.com/en/part/1448 - Current one has stripped threadsHPI# Z680 http://www.hpiracing.com/en/part/z680 - One was rounded off and the others are well wornHPI# 86065 http://www.hpiracing.com/en/part/86065 - I damaged the threads on one stub axle removing the rounded off lock nut Quote Link to comment Share on other sites More sharing options...
jordan_bench10 Posted October 29, 2015 Share Posted October 29, 2015 I have loads of bits bud anymore bits you need let me know i could even build you up an awesome spares package. Quote Link to comment Share on other sites More sharing options...
Derka Posted October 29, 2015 Author Share Posted October 29, 2015 Don't suppose you know what weight shock oil I need? Mine has the 8 shocksIf the engine runs, I'll be looking at a 2.4Ghz radio for it Quote Link to comment Share on other sites More sharing options...
jordan_bench10 Posted October 29, 2015 Share Posted October 29, 2015 Flysky gt3b can be had around 20 quid. Shock oil i used to used around a 35 wt softer go 30 harder go 40+ wt.. Quote Link to comment Share on other sites More sharing options...
evssv Posted October 29, 2015 Share Posted October 29, 2015 Don't suppose you know what weight shock oil I need? Mine has the 8 shocks If the engine runs, I'll be looking at a 2.4Ghz radio for itwe use 2 of these... in a bl hyper7 and I had one in me eb4g3... ..soon to go into sumin else no doubt. http://pages.ebay.com/link/?nav=item.view&id=401015681680&alt=web Quote Link to comment Share on other sites More sharing options...
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